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{{Short description|French biology researcher}}
{{BLP primary sources|date=June 2017}}
{{Medical citations needed|date=March 2020}} {{Use dmy dates|date=June 2020}}
{{Infobox scientist {{Infobox scientist
| honorific_prefix =
| name = Didier Raoult | name = Didier Raoult
| honorific_suffix =
| native_name =
| native_name_lang =
| image = Didier Raoult au 1er Cercle franco-chinois.png
| image_size =
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| alt =
| caption = Raoult in 2021
| birth_name = <!-- if different from "name" -->
| birth_date = {{birth date and age|1952|3|13|df=y}} | birth_date = {{birth date and age|1952|3|13|df=y}}
| nationality = ] | birth_place = ], ] (present-day ])
| fields = ] | home_town =
| other_names =
| workplaces = ]<br />La Timone Hospital, AP-HM<br />]
| siglum =
| honorific_prefix = Professor
| pronounce =
| citizenship =
| nationality = French
| fields = ]<br />]
| workplaces = ]<br />]
| patrons =
| education =
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| thesis_title = <!--(or | thesis1_title = and | thesis2_title = )-->
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| doctoral_students =
| notable_students =
| known_for =
| influences =
| influenced =
| awards =
| author_abbrev_bot =
| author_abbrev_zoo =
| spouse = Natacha Caïn
| partner = <!--(or | partners = )-->
| children = 3
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}} }}


'''Didier Raoult''' (born March 13, 1952 in Dakar, Senegal)<ref>https://www.lemonde.fr/planete/article/2020/03/28/coronavirus-et-hydroxychloroquine-le-professeur-raoult-publie-une-nouvelle-etude-aussitot-critiquee_6034785_3244.html</ref> is a French ] and ]. He holds ] and ]. degrees and specializes in infectious diseases. In 1984, Raoult created the '']'' Unit at ] (AMU). He also teaches infectious diseases in the Faculty of Medicine of Aix-Marseille University, and since 1982 has supervised many M.D. and Ph.D. degrees.<ref>{{Cite web|url=http://medecine.univ-amu.fr/fr/soutenances-these|title=Soutenances de thèse {{!}} Faculté de Médecine|website=medecine.univ-amu.fr|access-date=2017-04-25}}</ref> '''Didier Raoult''' ({{IPA|fr|didje ʁa.ul(t)}}; born 13 March 1952)<ref>{{Cite news | url=https://www.lemonde.fr/planete/article/2020/03/28/coronavirus-et-hydroxychloroquine-le-professeur-raoult-publie-une-nouvelle-etude-aussitot-critiquee_6034785_3244.html |title = Coronavirus et hydroxychloroquine : Le professeur Raoult publie une nouvelle étude, aussitôt critiquée|newspaper = Le Monde|date = 28 March 2020}}</ref> is a retired<ref name="Economist">{{cite news |title=There is a worrying amount of fraud in medical research |url=https://www.economist.com/science-and-technology/2023/02/22/there-is-a-worrying-amount-of-fraud-in-medical-research |access-date=24 February 2023 |newspaper=The Economist |publisher=The Economist Newspaper Limited |date=22 February 2023}}</ref> French ] and ] specialising in infectious diseases. He taught about infectious diseases at the Faculty of Medicine of ] (AMU), and in 1984, created the '']'' Unit of the university. From 2008 to 2022, Raoult was the director of the ''Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes''. He gained significant worldwide attention during the ] for vocally promoting ] as a treatment for the disease, despite lack of evidence for its effectiveness and the subsequent opposition from ] and ] to its use for the treatment of ] in hospitalized patients.<ref>{{Cite web|url=https://www.covid19treatmentguidelines.nih.gov/antiviral-therapy/chloroquine-or-hydroxychloroquine-with-or-without-azithromycin/|title = Chloroquine or Hydroxychloroquine}}</ref><ref>{{Cite web|url=https://www.who.int/news/item/04-07-2020-who-discontinues-hydroxychloroquine-and-lopinavir-ritonavir-treatment-arms-for-covid-19|title = WHO discontinues hydroxychloroquine and lopinavir/Ritonavir treatment arms for COVID-19}}</ref>


As of 2024, 28 of Raoult's research publications have been retracted, and at least another 218 of his publications have received an expression of concern from their publishers, due to questions related to ethics approval for his studies.<ref>{{cite web |last1=Kincaid |first1=Ellie |title=Controversial French researcher loses two papers for ethics approval issues |url=https://retractionwatch.com/2023/10/31/controversial-french-researcher-loses-two-papers-for-ethics-approval-issues/#comments |website=Retraction Watch |date=31 October 2023 |publisher=Center for Scientific Integrity |access-date=2023-11-01}}</ref><ref>{{cite web |last1=Kincaid |first1=Ellie |title=Journals retract six Didier Raoult papers for ethics violations |url=https://retractionwatch.com/2024/01/08/journals-retract-six-didier-raoult-papers-for-ethics-violations/ |website=Retraction Watch |date=8 January 2024 |publisher=Center for Scientific Integrity |access-date=2024-01-10}}</ref><ref>{{cite web |title=Retraction Watch Database |url=http://retractiondatabase.org/RetractionSearch.aspx#?auth%3dRaoult%252c%2bDidier |website=The Retraction Watch Database |publisher=Crossref |access-date=2024-04-05}}</ref><ref>{{cite news |last1=Marcus |first1=Adam |title=Embattled researcher Didier Raoult earns more than 100 expressions of concern and another retraction |url=https://retractionwatch.com/2024/04/03/embattled-researcher-didier-raoult-earns-dozens-more-expressions-of-concern-and-another-retraction/#comments |website=Retraction Watch |date=3 April 2024 |publisher=Center for Scientific Integrity |access-date=2024-04-05}}</ref><ref name="l949"/>
Since 2008, Raoult has been the director of the Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE; in English, Research Unit in Infectious and Tropical Emergent Diseases), collaborating with ] (National Center for the Scientific Research), ] (Research for the Development Institute), ] (National Institute of Health and Medical Research) and the ], in ]. His laboratory employs more than 200 people, including 86 researchers who publish between 250 and 350 papers per year and have produced more than 50 patents.<ref>{{Cite web|url=http://bases-brevets.inpi.fr/fr/resultats-recherche-avancee/1493135305529/result.html|title=Liste de résultats|website=bases-brevets.inpi.fr|language=fr|access-date=2017-04-25}}</ref> Raoult has also been involved in the creation of eight startups.<ref>{{Cite web|url=http://www.mediterranee-infection.com/article.php?larub=142&titre=incubation-de-start-ups|title=Incubation de start-ups – IHU Méditerranée Infection|website=www.mediterranee-infection.com|language=fr|access-date=2017-04-25|archive-url=https://web.archive.org/web/20170426151422/http://www.mediterranee-infection.com/article.php?larub=142&titre=incubation-de-start-ups|archive-date=2017-04-26|url-status=dead}}</ref>


==Career== == Personal life ==
Raoult was born on 13 March 1952 in ], ] (present-day ]). Raoult's father, who came from ], was serving there as a ];<ref name=":3">{{cite book|title=Rencontre avec un chercheur de microbes|author=Olivia Recasens|pages=56–59<!--endif p.totales-->|language=fr|date=1 January 2009}}</ref> his mother, originally from Marseille, was a nurse. His family returned to France in 1961, and settled in Marseille.<ref>{{cite web|title=Coronavirus : qui est Didier Raoult, la "star mondiale" de la microbiologie qui assure avoir trouvé le remède contre le Covid-19 ?|url=https://www.francetvinfo.fr/sante/maladie/coronavirus/coronavirus-qui-est-didier-raoult-la-star-mondiale-de-la-microbiologie-qui-assure-avoir-trouve-le-remede-contre-le-covid-19_3884387.html|website=Franceinfo|language=fr|date=28 March 2020|access-date=24 April 2020}}</ref>
Didier Raoult initiated the construction of a new building to host the Institut Hospitalo Universitaire (IHU) Méditerranée Infection, using the highest grant available in France for medical research (73 million euros granted by the National Agency for Research).<ref>Méditerranée Infection 10-IAHU-03</ref> The IHU Mediterranée Infection, which opened in early 2017,<ref>{{Cite web|url=http://www.mediterranee-infection.com/|title=Accueil – IHU Méditerranée Infection|website=www.mediterranee-infection.com|language=fr|access-date=2017-04-27}}</ref> is dedicated to the management and study of infectious diseases and combines diagnostic, care, research and teaching activities in one location.<ref>{{Cite web|url=http://www.mediterranee-infection.com/article.php?larub=9&titre=missions-et-objectifs|title=Missions et objectifs – IHU Méditerranée Infection|website=www.mediterranee-infection.com|language=fr|access-date=2017-04-27|archive-url=https://web.archive.org/web/20170331211532/http://www.mediterranee-infection.com/article.php?larub=9&titre=missions-et-objectifs|archive-date=2017-03-31|url-status=dead}}</ref>
He was for a time schooled in ], then attended a boarding school in ].<ref name=":7">{{cite news|title=Didier Raoult, l'infectiologue marseillais derrière la folie planétaire autour de l'hydroxychloroquine|url=https://www.lemonde.fr/planete/article/2020/03/25/didier-raoult-le-trublion-du-covid-19_6034364_3244.html|author=Gilles Rof|newspaper=Le Monde|date=25 March 2020|access-date=25 March 2020}}</ref>


A poor student,<ref name=":3" /><ref name="LeHir201011">{{cite news|title=Chasseur de microbes|url=https://www.lemonde.fr/planete/article/2010/11/19/chasseur-de-microbes_1442299_3244.html|author=Pierre Le Hir|newspaper=Le Monde|date=19 November 2010|quote='J'étais un mauvais élève, agité, aux bulletins scolaires effarants', raconte-t-il. Abonné aux redoublements, il abandonne le lycée en classe de 1re, en 1968}}</ref> Raoult repeated a year at high school, then dropped out in the second year of high school to board a French merchant ship called ''Renaissance'' and spent the next two years at sea.<ref name="LeHir201011" /><ref name=":5">{{cite web|title=Didier Raoult, le "pêcheur de microbes" à l'assaut du Covid-19|url=https://www.sciencesetavenir.fr/sante/didier-raoult-le-pecheur-de-microbes-a-l-assaut-du-covid-19_142627|website=Sciences et Avenir|date=20 March 2020|access-date=20 March 2020}}</ref><ref name=20200330slate>{{Cite web|url=https://slate.com/news-and-politics/2020/03/didier-raoult-hydroxychloroquine-plaquenil.html|title=The Trumpian French Doctor Behind the Chloroquine Hype|first=Robert|last=Zaretsky|date=30 March 2020|website=Slate}}</ref>
On 19 November 2010, he was awarded the "]" for his career.<ref>{{Cite web|url=http://histoire.inserm.fr/de-l-inh-a-l-inserm/les-prix-inserm/prix-2010|title=Prix 2010 / Histoire de l'Inserm|last=histoire|website=histoire.inserm.fr|language=fr-FR|access-date=2017-04-27}}</ref> In 2015, Raoult was awarded the "]" of the Institut de France. He shared the €450.000 prize money with biologist Chris Bowler from the Institut de Biologie de l'Ecole Normale Supérieure in Paris.<ref> - website of the ]</ref>


In 1972, he sat his baccalauréat in literature as an independent candidate, and registered at the ].<ref name="PortraitInserm">Portrait par l'INSERM – 2010 : {{Webarchive|url=https://web.archive.org/web/20200403160035/https://histoire.inserm.fr/content/download/16833/121077/file/didier_raoult.pdf|date=3 April 2020}} (source: {{Webarchive|url=https://web.archive.org/web/20200602212825/https://histoire.inserm.fr/de-l-inh-a-l-inserm/les-prix-inserm/prix-2010/didier-raoult-grand-prix-2010|date=2 June 2020}})</ref> Believing in a family tradition in medicine, Raoult senior refused to pay for his studies in any other subject.<ref name=":3" /> Raoult had wanted to become an obstetrician after qualifying, but his grade in the resident's examination was too low for that choice. He specialised instead in infectious diseases, in the footsteps of his great-grandfather Paul Legendre (1854–1936).<ref>Catherine Lallement, « LE GENDRE Louis Paul, Docteur », ''La France savante'', CTHS, .</ref><ref name="urgence">{{cite web|title=Didier Raoult, urgence oblige|url=https://www.parismatch.com/Actu/Sante/Didier-Raoult-urgence-oblige-1680801|website=Paris Match|language=fr|date=3 April 2020}}</ref><ref>« Paul Legendre, le premier infectiologue, qui créa l'hôpital des contagieux de la porte d'Aubervilliers, à Paris (...). » cf. Vaudoit 2018, chap.II</ref>
In 2014, according to ISI Web of Knowledge, he is the most cited ] in Europe, and the 7<sup>th</sup> worldwide.<ref>{{Cite web|url=https://www.journals.elsevier.com/human-microbiome-journal/news/meet-editor-in-chie|title=Meet the Editor-in-Chief|website=elsevier.com|language=en|access-date=2020-03-28}}</ref><ref>{{Cite web|url=https://www.fnac.com/Didier-Raoult/ia135922/bio|title=Didier Raoult - Biographie|website=fnac.com|language=fr-FR|access-date=2020-03-28}}</ref>


In 1982, Raoult married ] and novelist Natacha Caïn (born 1960).<ref>. Closermag.fr, 11 April 2020.
In 2020, the website Expertscape ranks him 1<sup>st</sup> ] in the world for ].<ref>{{Cite web|url=http://expertscape.com/ex/communicable+disease|title=Expertise in Communicable Diseases: Worldwide|website=expertscape.com|language=en|access-date=2020-03-28}}</ref><ref>{{Cite web|url=https://www.cbs19news.com/story/41922088/prof-didier-raoult-discusses-coronavirus-and-chloroquine|title=Prof. Didier Raoult Discusses Coronavirus and Chloroquine|website=https://www.cbs19news.com/|language=en|access-date=2020-03-28}}</ref>
</ref> They have two children,<ref>{{cite web|title=La biographie de Didier Raoult|url=https://didierraoult.com/|website=Didierraoult.com|access-date=25 April 2020|archive-date=2 May 2020|archive-url=https://web.archive.org/web/20200502044949/https://didierraoult.com/|url-status=dead}}</ref> and Raoult has an estranged daughter from a previous marriage, ] Magali Carcopino-Tusoli.<ref name=RTL>{{Cite web|url=https://www.rtl.fr/actu/debats-societe/didier-raoult-la-relation-explosive-avec-sa-fille-magali-carcopino-tusoli-7900121276|title=Didier Raoult : la relation explosive avec sa fille, Magali Carcopino-Tusoli|first=Etienne|last=Baudu|date=4 February 2022|website=RTL}}</ref>


==Citations== ==Career==
From 2008 to 2022, Raoult was the director of the ''Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes'', (URMITE; in English, Infectious and Tropical Emergent Diseases Research Unit), which employs more than 200 people.<ref>{{Cite web|url=http://bases-brevets.inpi.fr/fr/resultats-recherche-avancee/1493135305529/result.html|title=Liste de résultats|website=bases-brevets.inpi.fr|language=fr|access-date=25 April 2017}}</ref> He retired in the summer of 2022,<ref>{{cite news |title='Serious malfunctions' at French research unit headed by Didier Raoult |url=https://www.thelocal.fr/20220907/serious-malfunctions-at-french-research-unit-headed-by-didier-raoult/ |access-date=24 February 2023 |work=The Local fr |publisher=The Local Europe AB |date=7 September 2022}}</ref> after being allowed to stay on for at most one year after retiring from his professor position on August 31, 2021.<ref>{{Cite news|last=Noack|first=Rick|date=September 17, 2021|title=French scientist who promoted one of Trump's favorite coronavirus cures set to be replaced|newspaper=The Washington Post|url=https://www.washingtonpost.com/world/europe/didier-raoult-hydroxychloroquine/2021/09/17/a56c5bd4-1574-11ec-a019-cb193b28aa73_story.html|access-date=October 23, 2021}}</ref><ref>{{cite news |last1=Sossa |first1=Désiré |title=France: Didier Raoult restera un an de plus à l'IHU malgré sa retraite |url=https://lanouvelletribune.info/2021/09/france-didier-raoult-restera-un-an-de-plus-a-lihu-malgre-sa-retraite/ |access-date=23 October 2021 |publisher=La Nouvelle Tribune |date=September 2021 |language=French}}</ref>
He was "classified among the ten leading French researchers by the journal ''Nature'', for the number of his publications (a credit of more than two thousand) and for his citations number", in 2008, as reported by a daily economic newspaper covering his work.<ref name="Echos">{{cite news|title=Didier Raoult, a voluntary researcher|work=Les Échos|date=29 October 2008|page=13}}</ref>


Raoult was awarded the ] in 2010 <ref>{{Cite web|url=http://histoire.inserm.fr/de-l-inh-a-l-inserm/les-prix-inserm/prix-2010|title=Prix 2010 / Histoire de l'Inserm|last=histoire|website=histoire.inserm.fr|language=fr-FR|access-date=27 April 2017}}</ref> and in 2015 shared the €450,000 prize of the ] of the Institut de France with biologist Chris Bowler from the Institut de Biologie de l'Ecole Normale Supérieure in Paris.<ref> – website of the ]</ref> The bacteria genus '']'' was named in his honor<ref name="Drancourt">{{cite journal|last=Drancourt|first=M|author2=Bollet, C |author3=Carta, A |author4=Rousselier, P |title=Phylogenetic analyses of ''Klebsiella'' species delineate ''Klebsiella'' and ''Raoultella'' gen. nov., with description of ''Raoultella ornithinolytica'' comb. nov., ''Raoultella terrigena'' comb. nov. and ''Raoultella planticola'' comb. nov.|journal=International Journal of Systematic and Evolutionary Microbiology|date=May 2001|volume=51|issue=Pt 3|pages=925–32|pmid=11411716|doi=10.1099/00207713-51-3-925}}</ref> by his right-hand man and longest-serving collaborator, Michel Drancourt.<ref name="RaoultNYTimes">{{cite journal|last=Sayare|first=Scott|title=He Was a Science Star. Then He Promoted a Questionable Cure for Covid-19.|journal=NY Times|date=12 May 2020 |url=https://www.nytimes.com/2020/05/12/magazine/didier-raoult-hydroxychloroquine.html}}</ref>
According to the ] source "Highly Cited Researchers List", Didier Raoult is among the most influential researchers in his field and his publications are among the 1% most consulted in academic journals. He is one of the 99 most cited ]s in the world and one of the 73 most highly cited French ]s.<ref name=":0">{{Cite news|url=http://hcr.stateofinnovation.com/|title=HCR Clarivate Analytics|access-date=2017-04-25|language=en|archive-url=https://web.archive.org/web/20171115092422/http://hcr.stateofinnovation.com/|archive-date=2017-11-15|url-status=dead}}</ref> He is a world reference for ] and ].<ref>Science et Santé magazine nº 1er décembre 2010 p. 14</ref> In April 2017, on ],<ref>{{Cite web|url=https://scholar.google.fr/citations?user=n8EF_6kAAAAJ&hl=fr|title=Didier Raoult – Citations Google&nbsp;Scholar|website=scholar.google.fr|access-date=2017-04-25}}</ref> he cumulated over 104,000 citations and an h index of 148. He is also on the list of the 400 most cited authors in the ] world.<ref>{{cite journal |doi=10.1111/eci.12171 |pmid=24134636 |title=A list of highly influential biomedical researchers, 1996-2011 |journal=European Journal of Clinical Investigation |volume=43 |issue=12 |pages=1339–65 |year=2013 |last1=Boyack |first1=Kevin W |last2=Klavans |first2=Richard |last3=Sorensen |first3=Aaron A |last4=Ioannidis |first4=John P.A |url=https://semanticscholar.org/paper/31c84df9e9b7dedf4a9894d2f2e0857af57bff2b }}</ref>


Raoult initiated the construction of a new building to host the ] (IHU) Méditerranée Infection.<ref>Méditerranée Infection 10-IAHU-03</ref> The IHU Mediterranée Infection, which opened in early 2017,<ref>{{Cite web|url=http://www.mediterranee-infection.com/|title=Accueil – IHU Méditerranée Infection|website=mediterranee-infection.com|language=fr|access-date=27 April 2017}}</ref> is dedicated to the management and study of infectious diseases and combines diagnostic, care, research and teaching activities in one location.<ref>{{Cite web|url=http://www.mediterranee-infection.com/article.php?larub=9&titre=missions-et-objectifs|title=Missions et objectifs – IHU Méditerranée Infection|website=mediterranee-infection.com|language=fr|access-date=27 April 2017|archive-url=https://web.archive.org/web/20170331211532/http://www.mediterranee-infection.com/article.php?larub=9&titre=missions-et-objectifs|archive-date=31 March 2017|url-status=dead}}</ref>
According to the analysis of the publications from 2007 to 2013, by Kathleen Gransalke, for Labtimes (2017/02), Didier Raoult appears at the top of the European classification (including ]) with 18,128 citations.<ref>{{Cite web|url=http://www.labtimes.org/labtimes/ranking/2017_02/index2.lasso|title=Labtimes: Publication Statistics: Microbiology }}</ref>


In May 2022 the French drug safety agency ] announced it would file charges against the IHU for potentially criminal ] during the COVID-19 pandemic.<ref name="pmid35508313">{{cite journal| author=Casassus B| title=French research institute faces criminal charges over "serious breaches". | journal=BMJ | year= 2022 | volume= 377 | issue= | pages= o1117 | pmid=35508313 | doi=10.1136/bmj.o1117 | pmc= | s2cid=248507288 | url=https://pubmed.ncbi.nlm.nih.gov/35508313 }}</ref>
He totalizes more than 2,300 indexed publications including 8 in '']'', and 3 in '']'', the two most visible scientific journals according to the N&S index of Shanghai's ranking.<ref>{{PubMedAuthorSearch|Raoult|D}}</ref>


In June 2022, ANSM implemented "a series of particularly severe sanctions" against the Raoult-led IHU.<ref>{{cite web |last1=Garcia |first1=Victor |title=IHU : l'ANSM prononce de sévères sanctions contre l'institut de Didier Raoult |url=https://www.lexpress.fr/actualite/sciences/ihu-l-ansm-prononce-de-severes-sanctions-contre-l-institut-de-didier-raoult_2175170.html |website=L'Express |date=13 June 2022 |access-date=2022-09-08}}</ref>
== Research topics ==


In September 2022 it was reported that Raoult's laboratory was being investigated by the ] for “serious malfunctions,” that in response to this "scientific misconduct investigation by the University of Aix Marseille" four papers from Raoult's group appearing in journals published by the ] had received ], and that a criminal investigation had been initiated.<ref>{{cite news |last1=Marcus |first1=Adam |title=Didier Raoult papers earn expressions of concern as criminal investigation gets underway |url=https://retractionwatch.com/2022/09/08/didier-raoult-papers-earn-expressions-of-concern-as-criminal-investigation-gets-underway/#more-125614 |access-date=2022-09-08 |work=Retraction Watch |publisher=Center for Scientific Integrity |date=2022-09-08}}</ref>
=== Giant viruses ===
Raoult's team was the first to discover very large size ]es.{{cn|date=March 2020}}


==Citations==
In 2003, Raoult and Bernard La Scola identified a giant amoebic virus, ],<ref>{{cite journal |doi=10.1126/science.1081867 |pmid=12663918 |title=A Giant Virus in Amoebae |journal=Science |volume=299 |issue=5615 |pages=2033 |year=2003 |last1=Scola |first1=B. L |last2=Audic |first2=S |last3=Robert |first3=C |last4=Jungang |first4=L |last5=De Lamballerie |first5=X |last6=Drancourt |first6=M |last7=Birtles |first7=R |last8=Claverie |first8=J. M |last9=Raoult |first9=D }}</ref> and&nbsp;in 2004 established its ].<ref>{{cite journal |doi=10.1126/science.1101485 |pmid=15486256 |title=The 1.2-Megabase Genome Sequence of Mimivirus |journal=Science |volume=306 |issue=5700 |pages=1344–50 |year=2004 |last1=Raoult |first1=D |last2=Audic |first2=S |last3=Robert |first3=C |last4=Abergel |first4=C |last5=Renesto |first5=P |last6=Ogata |first6=H |last7=La Scola |first7=B |last8=Suzan |first8=M |last9=Claverie |first9=J. M }}</ref>
Raoult has more than 2,300 indexed publications.<ref>{{PubMedAuthorSearch|Raoult|D}}</ref> As of 2008, he was "classified among the ten leading French researchers by the journal ''Nature'', for the number of his publications (more than two thousand) and for his citation number".<ref name="Echos">{{cite news|title=Didier Raoult, a voluntary researcher|work=Les Échos|date=29 October 2008|page=13}}</ref> According to ISI Web of Knowledge, he was the most cited microbiologist in Europe in 2014, and the seventh worldwide.<ref>{{Cite web|title=Meet the Editor-in-Chief|url=https://www.journals.elsevier.com/human-microbiome-journal/news/meet-editor-in-chie|website=elsevier.com|access-date=28 March 2020}}</ref><ref>{{Cite web|title=Didier Raoult – Biographie|url=https://www.fnac.com/Didier-Raoult/ia135922/bio|website=fnac.com|language=fr-FR|access-date=28 March 2020}}</ref> According to the ] source "Highly Cited Researchers List", Raoult is among the most influential researchers in his field and his publications are among the 1% most consulted in academic journals. He is one of the 99 most cited microbiologists in the world and one of the 73 most highly cited French scientists.<ref name=":0">{{Cite news|url=http://hcr.stateofinnovation.com/|title=HCR Clarivate Analytics|access-date=25 April 2017|archive-url=https://web.archive.org/web/20171115092422/http://hcr.stateofinnovation.com/|archive-date=15 November 2017|url-status=dead}}</ref> He is a world reference for ] and ].<ref>Science et Santé magazine nº 1er décembre 2010 p. 14</ref> As of January 2022, he had over 194,000 citations and an ] of 197.<ref>{{Cite web|title=Didier Raoult – Citations Google&nbsp;Scholar|url=https://scholar.google.fr/citations?user=n8EF_6kAAAAJ&hl=fr|publisher=Google Scholar|access-date=6 January 2022}}</ref> He is also on the list of the 400 most cited authors in the ] world.<ref>{{cite journal |doi=10.1111/eci.12171|doi-access=free |pmid=24134636 |title=A list of highly influential biomedical researchers, 1996-2011 |journal=European Journal of Clinical Investigation |volume=43 |issue=12 |pages=1339–65 |year=2013 |last1=Boyack |first1=Kevin W |last2=Klavans |first2=Richard |last3=Sorensen |first3=Aaron A |last4=Ioannidis |first4=John PA |s2cid=13259290 }}</ref> Raoult is also one of the 7.3% most self-cited authors, more than 25% of his citations coming from papers he co-authored.<ref>{{cite journal |doi=10.1371/journal.pbio.3000384 |pmid= 31404057 |title=A standardized citation metrics author database annotated for scientific field|journal=PLOS Biology |volume=17 |issue=8 |pages=e3000384 |year=2019 |last1=Ioannidis |first1=John PA |last2=Baas |first2=Jeroen |last3=Klavans |first3=Richard |last4=Boyack |first4=Kevin W|pmc= 6699798 |doi-access= free }}</ref>


Yet, Raoult's extremely uncommon and high publication rate results from his "attaching his name to nearly every paper that comes out of his institute",<ref>{{Cite news|last=Sayare|first=Scott|date=12 May 2020|title=He Was a Science Star. Then He Promoted a Questionable Cure for Covid-19.|work=The New York Times|url=https://www.nytimes.com/2020/05/12/magazine/didier-raoult-hydroxychloroquine.html|access-date=18 May 2020|issn=0362-4331}}</ref> a practice that has been called "grossly unethical" by ].<ref>{{Cite web|title=What Do Trump And Yale Medical School Have In Common? Both Were Duped About A COVID-19 Treatment|url=https://www.forbes.com/sites/stevensalzberg/2020/05/18/what-do-trump-and-yale-medical-school-have-in-common-both-were-duped-about-a-covid-19-treatment/|last=Salzberg|first=Steven|website=Forbes|access-date=18 May 2020}}</ref> Since 2013 he has been one of the overseas scientists co-affiliated with the ] of ], Saudi Arabia,<ref>{{cite web|url=https://gssr.kau.edu.sa/Pages-251608.aspx|title=Prof Didier Raoult visits KAU|website=King Abdulaziz University|language=en|access-date=11 June 2020}}</ref><ref>{{cite journal|title=A Decade of Improvements in Mimiviridae and Marseilleviridae Isolation from Amoeba|url=https://www.karger.com/Article/FullText/354556|last1=Pagnier|first1=Isabelle|last2=Reteno|first2=Dorine-Gaelle Ikanga|last3=Saadi|first3=Hanene|journal=Intervirology|volume=56|pages=354–363<!--endif p.totales-->|language=en|year=2013|issue=6|access-date=11 June 2020|issn=1423-0100|doi=10.1159/000354556|pmid=24157882|s2cid=19392983|doi-access=free}}</ref> known to "offer highly cited researchers lucrative adjunct professorships, with minimal requirements for them to be physically present, in return for being listed by them as a secondary affiliation", and so increase its own institutional citation index.<ref>{{cite web|title=New study raises questions about global rankings of citations|url=https://www.insidehighered.com/news/2014/07/17/new-study-raises-questions-about-global-rankings-citations|website=insidehighered.com|language=en|access-date=11 June 2020}}</ref>
In 2016, this team found in mimivirus a defense mechanism preventing the implantation of ]s in the virus plant (MIMIVIRE).<ref>{{cite journal |doi=10.1038/nature17146 |pmid=26934229 |title=MIMIVIRE is a defence system in mimivirus that confers resistance to virophage |journal=Nature |volume=531 |issue=7593 |pages=249–52 |year=2016 |last1=Levasseur |first1=Anthony |last2=Bekliz |first2=Meriem |last3=Chabrière |first3=Eric |last4=Pontarotti |first4=Pierre |last5=La Scola |first5=Bernard |last6=Raoult |first6=Didier }}</ref> Finally, it has been shown that this virophage could be integrated into the cells in the form of a pro-virophage and that it could be associated with transposon-like structures called transpovirons.<ref>{{cite journal |doi=10.1073/pnas.1208835109 |jstor=41829810 |pmid=23071316 |pmc=3497776 |title=Provirophages and transpovirons as the diverse mobilome of giant viruses |journal=Proceedings of the National Academy of Sciences |volume=109 |issue=44 |pages=18078–83 |year=2012 |last1=Desnues |first1=C |last2=La Scola |first2=B |last3=Yutin |first3=N |last4=Fournous |first4=G |last5=Robert |first5=C |last6=Azza |first6=S |last7=Jardot |first7=P |last8=Monteil |first8=S |last9=Campocasso |first9=A |last10=Koonin |first10=E. V |last11=Raoult |first11=D }}</ref>


Of the 1,836 articles published by Raoult between 1995 and 2020 (amounting to over 120 a year, or approximately one article every three days), 230 were published in two journals edited by Michel Drancourt, who was his right-hand man at the IHU and a close collaborator for over 35 years. Staff members have editorial positions at almost half the journals that have published Raoult's work. The funding of French health institutes according to their number of publications has been suggested to be at the root of his large number of publications.<ref>{{Cite web|date=12 June 2020|title=Interrogations sur la frénésie de publications du professeur Raoult|url=https://www.lepoint.fr/sante/interrogations-sur-la-frenesie-de-publications-du-professeur-raoult-12-06-2020-2379632_40.php|access-date=15 June 2020|website=Le Point|language=fr}}</ref>
They also discovered Marseilleviruses<ref>{{cite journal |doi=10.1073/pnas.0911354106 |pmid=20007369 |pmc=2799887 |title=Giant Marseillevirus highlights the role of amoebae as a melting pot in emergence of chimeric microorganisms |journal=Proceedings of the National Academy of Sciences |volume=106 |issue=51 |pages=21848–53 |year=2009 |last1=Boyer |first1=M |last2=Yutin |first2=N |last3=Pagnier |first3=I |last4=Barrassi |first4=L |last5=Fournous |first5=G |last6=Espinosa |first6=L |last7=Robert |first7=C |last8=Azza |first8=S |last9=Sun |first9=S |last10=Rossmann |first10=M. G |last11=Suzan-Monti |first11=M |last12=La Scola |first12=B |last13=Koonin |first13=E. V |last14=Raoult |first14=D }}</ref> and Faustoviruses.<ref>{{cite journal |doi=10.1128/JVI.00115-15 |pmid=25878099 |pmc=4468488 |title=Faustovirus, an Asfarvirus-Related New Lineage of Giant Viruses Infecting Amoebae |journal=Journal of Virology |volume=89 |issue=13 |pages=6585–94 |year=2015 |last1=Reteno |first1=Dorine Gaëlle |last2=Benamar |first2=Samia |last3=Khalil |first3=Jacques Bou |last4=Andreani |first4=Julien |last5=Armstrong |first5=Nicholas |last6=Klose |first6=Thomas |last7=Rossmann |first7=Michael |last8=Colson |first8=Philippe |last9=Raoult |first9=Didier |last10=La Scola |first10=Bernard }}</ref>


== Controversies ==
The discovery of giant viruses challenges the classification of viruses. Didier Raoult has several times reported that giant viruses are of a different nature than other viruses and that they constitute a 4th branch of microbes known as TRUC for "Things Resisting Uncompleted Classifications".<ref>{{cite journal |doi=10.1038/nrmicro.2016.197 |pmid=28239153 |title=Mimivirus: Leading the way in the discovery of giant viruses of amoebae |journal=Nature Reviews Microbiology |volume=15 |issue=4 |pages=243–254 |year=2017 |last1=Colson |first1=Philippe |last2=La Scola |first2=Bernard |last3=Levasseur |first3=Anthony |last4=Caetano-Anollés |first4=Gustavo |last5=Raoult |first5=Didier }}</ref><ref>{{cite journal |doi=10.1159/000354269 |pmid=23867259 |title=TRUC or the Need for a New Microbial Classification |journal=Intervirology |volume=56 |issue=6 |pages=349–53 |year=2013 |last1=Raoult |first1=Didier }}</ref>


=== American Society for Microbiology publishing ban ===
=== New bacteria ===
In 2006, Raoult and four co-authors were banned for one year from publishing in the journals of the ] (ASM), after a reviewer for '']'' discovered that four figures from the revised manuscript of a paper about a mouse model for ] were identical to figures from the originally submitted manuscript, even though they were supposed to represent a different experiment.<ref name=":1">{{Cite journal|last=Mary|first=C.|date=2 March 2012|title=Sound and Fury in the Microbiology Lab|journal=Science|volume=335|issue=6072|pages=1033–1035|doi=10.1126/science.335.6072.1033|pmid=22383821|bibcode=2012Sci...335.1033M|issn=0036-8075}}</ref> In response, Raoult "resigned from the editorial board of two other ASM journals, canceled his membership in the American Academy of Microbiology, ASM's honorific leadership group, and banned his lab from submitting to ASM journals".<ref name=":1" /> In response to '']'' covering the story in 2012, he stated that, "I did not manage the paper and did not even check the last version".<ref>{{Cite journal|date=13 April 2012|title=Corrections and Clarifications|journal=Science|volume=336|issue=6078|pages=155|doi=10.1126/science.336.6078.155-b|issn=0036-8075|pmc=56630}}</ref> The paper was subsequently published in a different journal.<ref>{{Cite journal|last1=Bechah|first1=Yassina|last2=Capo|first2=Christian|last3=Grau|first3=Georges E.|last4=Raoult|first4=Didier|last5=Mege|first5=Jean-Louis|date=June 2007|title=A murine model of infection with Rickettsia prowazekii: implications for pathogenesis of epidemic typhus|journal=Microbes and Infection|volume=9|issue=7|pages=898–906|doi=10.1016/j.micinf.2007.03.008|pmid=17537665|issn=1286-4579|doi-access=free}}</ref>
Since the 1990s, Raoult and his team have identified and described approximately 96 new pathogenic ]<ref name=Echos /> and showed their implication in human ]. The ] bacteria genus '']'' and the species '']'' have been named after him.<ref name="Drancourt">{{cite journal|last=Drancourt|first=M|author2=Bollet, C |author3=Carta, A |author4=Rousselier, P |title=Phylogenetic analyses of ''Klebsiella'' species delineate ''Klebsiella'' and ''Raoultella'' gen. nov., with description of ''Raoultella ornithinolytica'' comb. nov., ''Raoultella terrigena'' comb. nov. and ''Raoultella planticola'' comb. nov.|journal=International Journal of Systematic and Evolutionary Microbiology|date=May 2001|volume=51|issue=Pt 3|pages=925–32|pmid=11411716|doi=10.1099/00207713-51-3-925}}</ref>


=== Rickettsia, Bartonella, Q fever === === COVID-19 ===
Didier Raoult developed the field of culture of intracellular bacteria, then initiated the field of emerging rickettsioses and with his team identified 10 new species of human pathogenic Rickettsiae. The laboratory has rapidly become the National Reference Center (partnership with InVS France) and a ] Collaborating Center. As a result, the samples for diagnosis are coming from many hospitals all around the world.


{{See also|COVID-19 pandemic in France|Misinformation related to the COVID-19 pandemic|Chloroquine and hydroxychloroquine during the COVID-19 pandemic}}
He has designed and co-authored two reviews used as references in the world,<ref>Parola P, Paddock CD, Raoult D. Tick-borne rickettsioses around the world: emerging diseases challenging old concepts. Clin Microbiol Rev. 2005;18(4):719-56. Review.</ref><ref>Raoult D, Roux V. Rickettsioses as paradigms of new or emerging infectious diseases. Clin Microbiol Rev. 1997 Oct;10(4):694-719. Review.</ref> and has shown that Rickettsiae are transmitted by lice, fleas and ticks but also likely to be transmitted by mosquitoes, which is the case of ''Rickettsia felis'', the most common species of Rickettsiae in the tropics.<ref>Dieme C, Bechah Y, Socolovschi C, Audoly G, Berenger JM, Faye O, Raoult D, Parola P. Transmission potential of Rickettsia felis infection by Anopheles gambiae mosquitoes. Proc Natl Acad Sci U S A. 2015;112(26):8088-93. {{PMID|26056256}}.</ref>


On 17 March 2020, Raoult announced in an online video that a trial involving 24 patients from southeast France supported the claim that ] and ] were effective in treating for COVID-19.<ref>{{Cite web|url=https://www.connexionfrance.com/French-news/French-researcher-in-Marseille-posts-successful-Covid-19-coronavirus-drug-trial-results|title=French researcher posts successful Covid-19 drug trial|last=France|first=Connexion|website=connexionfrance.com|access-date=18 March 2020}}</ref> On 20 March, he published a preliminary report of his study online in the ''International Journal of Antimicrobial Agents.''<ref>{{cite journal|display-authors=1|first1=Philippe|last1=Gautret|first2=Jean-Christophe|last2=Lagier|first3=Philippe|last3=Parola|first4=Van Thuan|last4=Hoang|first5=Line|last5=Meddeb|first6=Morgane|last6=Mailhe|first7=Barbara|last7=Doudier|first8=Johan|last8=Courjon|first9=Valérie|last9=Giordanengo|first10=Vera Esteves|last10=Vieira|first11=Hervé Tissot|last11=Dupont|first12=Stéphane|last12=Honoré|first13=Philippe|last13=Colson|first14=Eric|last14=Chabrière|first15=Bernard|last15=La Scola|first16=Jean-Marc|last16=Rolain|first17=Philippe|last17=Brouqui|first18=Didier|last18=Raoult|date=20 March 2020|orig-year=Online ahead of print|title=Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial|journal=International Journal of Antimicrobial Agents|volume=56|issue=1|pages=105949|doi=10.1016/j.ijantimicag.2020.105949|pmid=32205204|pmc=7102549}}</ref>&nbsp; The French Health Minister, ], was reported as announcing that "new tests will now go ahead in order to evaluate the results by Professor Raoult, in an attempt to independently replicate the trials and ensure the findings are scientifically robust enough, before any possible decision might be made to roll any treatment out to the wider public".<ref name=Sanofi2020>{{Cite web|url=https://www.connexionfrance.com/French-news/French-lab-Sanofi-hypothetically-offers-millions-of-doses-of-potential-Covid-19-Plaquenil-anti-malaria-drug|title=French lab offers 'millions of doses' of Covid-19 drug|last=France|first=Connexion|website=connexionfrance.com|access-date=19 March 2020}}</ref> Véran refused to endorse the study conducted by Raoult and the possible health ramifications, on the basis of a single study conducted on 24 people.<ref>{{Cite web|url=https://www.politico.com/news/2020/03/30/in-france-controversial-doctor-stirs-coronavirus-debate-156889|title=In France, controversial doctor stirs coronavirus debate|website=Politico|access-date=1 April 2020}}</ref> The study was retracted on 17 December 2024 over a lack of informed consent for patients and after scientists—including three of its co-authors—raised concerns over methodological problems.<ref name="l949">{{cite report | last=O'Grady | first=Cathleen | title=Infamous paper that popularized unproven COVID-19 treatment finally retracted | date=2024-12-17 | doi=10.1126/science.z8aky7n | url=https://www.science.org/content/article/infamous-paper-popularized-unproven-covid-19-treatment-finally-retracted | journal=Science}}</ref>
Regarding Bartonella, the team was the first to identify their role in endocarditis.<ref>Edouard S, Nabet C, Lepidi H, Fournier PE, Raoult D. Bartonella, a common cause of endocarditis: a report on 106 cases and review. J Clin Microbiol. 2015 Mar;53(3):824-9.</ref>


The French media also reported that the French pharmaceutical company ] had offered French authorities millions of doses of the drug for use against COVID-19.<ref name="Sanofi2020" /> On 3 April, the International Society of Antimicrobial Chemotherapy, which publishes the journal, issued a statement that the report on the non-blind, non-randomized study "does not meet the Society's expected standard, especially relating to the lack of better explanations of the inclusion criteria and the triage of patients to ensure patient safety."<ref>{{cite news|url=https://www.the-scientist.com/news-opinion/journal-publisher-concerned-over-hydroxychloroquine-study-67405|title=Journal Publisher Concerned over Hydroxychloroquine Study|last=Grens|first=Kerry|date=9 April 2020|work=The Scientist|access-date=26 April 2020}}</ref>
For Q fever, a disease transmitted by the bacterial agent ''Coxiella burnetii'', Didier Raoult found it necessary to redefine the criteria for diagnosis, to describe all aspects of the disease and to demonstrate the role of the bacterium in the genesis of Non-Hodgkin's lymphomas.<ref>Melenotte C, Million M, Audoly G, Gorse A, Dutronc H, Roland G, Dekel M, Moreno A, Cammilleri S, Carrieri MP, Protopopescu C, Ruminy P, Lepidi H, Nadel B, Mege JL, Xerri L, Raoult D. B-cell non-Hodgkin lymphoma linked to ''Coxiella burnetii''. Blood. 2016 Jan 7;127(1):113-21.</ref>


Raoult was one of 11 prominent scientists named on 11 March to a committee to advise on scientific matters pertaining to the epidemic in France.<ref name="sciencesetavenir">{{cite web|title=Coronavirus Covid-19 : qui est dans le conseil scientifique du ministre de la Santé ?|url=https://www.sciencesetavenir.fr/sante/coronavirus-covid-19-qui-est-dans-le-conseil-scientifique-du-ministre-de-la-sante_142500|website=Sciences et Avenir|date=16 March 2020|access-date=31 March 2020}}</ref> He did not attend any of the meetings and resigned from the committee on 24 March saying that he refused to participate.<ref>{{cite web|title=Didier Raoult claque la porte du Conseil scientifique de Macron|url=https://www.lesechos.fr/idees-debats/sciences-prospective/exclusif-coronavirus-didier-raoult-claque-la-porte-du-conseil-scientifique-de-macron-1188372|website=Les Echos|date=24 March 2020|access-date=24 March 2020}}.</ref> He denounced the "absence of anything scientifically sound", and criticised its members for "not having a clue".<ref name="francetvinfo3941995"/><ref>{{cite web|title=Chloroquine, conseil scientifique, vaccin... Didier Raoult se lâche dans "Paris Match"|url=https://www.midilibre.fr/2020/04/30/chloroquine-conseil-scientifique-vaccin-didier-raoult-se-lache-dans-paris-match,8869197.php|website=midilibre.fr|access-date=1 May 2020}}</ref> He defended chloroquine as a benchmark drug for lung diseases, saying that it had suddenly been declared dangerous after having been safely used for 80 years.<ref name="francetvinfo3941995">{{Cite web|url=https://www.francetvinfo.fr/sante/maladie/coronavirus/coronavirus-selon-le-professeur-didier-raoult-le-consensus-c-est-pe-tain_3941995.html|title="Le consensus, c'est Pétain" : le professeur Raoult s'en prend au Conseil scientifique et à sa gestion du Covid-19|date=30 April 2020|website=Franceinfo}}</ref> Following reports and a complaint filed in July by the French-speaking Society of Infectious Pathology (Spilf), the departmental council of the French Order of Physicians opened a formal case against Didier Raoult.<ref>{{Cite web |first1=Louise |last1=Colcombet |first2=Elsa |last2=Mari |date=2020-11-12|title=Le professeur Didier Raoult poursuivi par l'Ordre des médecins|url=https://www.leparisien.fr/societe/sante/le-professeur-didier-raoult-poursuivi-par-l-ordre-des-medecins-12-11-2020-8407949.php|access-date=2020-11-12|website=Le Parisien|language=fr-FR}}</ref>
He highlighted, with his team, the role of anti-phospholipid antibodies in endocarditis and thromboses due to ''Coxiella burnetii.''<ref>Million M, Thuny F, Bardin N, Angelakis E, Edouard S, Bessis S, Guimard T, Weitten T, Martin-Barbaz F, Texereau M, Ayouz K, Protopopescu C, Carrieri P, Habib G, Raoult D. Antiphospholipid Antibody Syndrome With Valvular Vegetations in Acute Q Fever. Clin Infect Dis. 2016 Mar 1;62(5):537-44.</ref> He recently described acute endocarditis<ref>Eldin C, Raoult D. Moving from Q fever to C. burnetii infection. Epidemiol Infect. 2016 Apr;144(6):1163-4.</ref> and redefined persistent endocarditis. He has developed the therapeutic strategies currently used by the medical world (doxycycline and Plaquenil), using for the first time Plaquenil to alkalize the acidic vacuole in which the bacteria live, in order to allow the activity of the antibiotics inhibited by this acidity.<ref>Raoult D, Houpikian P, Tissot Dupont H, Riss JM, Arditi-Djiane J, Brouqui P. Treatment of Q fever endocarditis: comparison of 2 regimens containing doxycycline and ofloxacin or hydroxychloroquine. Arch Intern Med. 1999 Jan 25;159(2):167-73.</ref>


=== Accusations of falsified images, and legal threats===
A book testifies to this whole work.<ref>Raoult, D. and Parola, P. Rickettsial Diseases. Raoult, D. and Parola, P.&nbsp; 1-379. 2007. New York, Informa Healthcare USA, Inc.Raoult, D. and Parola, P. Rickettsial Diseases. Raoult, D. and Parola, P.&nbsp; 1-379. 2007. New York, Informa Healthcare USA, Inc.</ref>
On May 5, 2021, ] (who specializes in identifying manipulated images in scientific papers) raised concerns about dozens of Raoult's papers—including ethical, procedural, and methodological problems in a March 2020 paper reporting success in a small hydroxychloroquine trial. Raoult's lawyer subsequently announced that Raoult was accusing and suing the scientific integrity consultant of harassment and blackmail. The French non-profit association Citizen4Science, formed by scientists and citizens, published a press release and a petition that day, denouncing the harassment of scientists and defenders of science integrity,<ref>{{Cite news|last1=p|first1=More profit on|last2=Dit|first2=Emic-Ocasapiens|date=2021-05-05|title=PRESS RELEASE #5|url=https://citizen4science.org/press-release-5/|access-date=2021-06-05|website=Citizen4Science|language=fr-FR}}</ref> specifically defending Bik and calling on French authorities to intervene and for journalists to look into the matter. Several French newspapers immediately reported Citizen4Science's initiative.<ref>{{Cite web|date=2021-05-12|title=Karine Lacombe : "Si on fait comme si l'épidémie était finie, la gifle risque d'être forte"|url=https://www.lexpress.fr/actualite/sciences/karine-lacombe-si-on-fait-comme-si-l-epidemie-etait-finie-la-gifle-risque-d-etre-forte_2150583.html|access-date=2021-06-05|website=LExpress.fr|language=fr}}</ref><ref>{{Cite web|last1=LIBERATION|last2=AFP|title=Le Sommet sur les économies africaines demande la levée des brevets sur les vaccins contre le Covid-19|url=https://www.liberation.fr/societe/sante/retrouvez-les-dernieres-informations-sur-la-crise-sanitaire-liee-a-la-pandemie-de-covid-19-20210518_2DNQWETKINCUVKM3PJ6KB5FT6I/|access-date=2021-06-05|website=Libération|language=fr}}</ref><ref>{{Cite news|date=2021-05-18|title=Didier Raoult entame un bras de fer judiciaire contre une spécialiste de l'intégrité scientifique|language=fr|work=Le Monde.fr|url=https://www.lemonde.fr/sciences/article/2021/05/18/bras-de-fer-judiciaire-entre-didier-raoult-et-une-specialiste-de-l-integrite-scientifique_6080545_1650684.html|access-date=2021-06-05}}</ref><ref>{{Cite web|title=Pourquoi Didier Raoult porte plainte contre Elisabeth Bik, la chasseuse de fraude|url=https://www.heidi.news/sante/pourquoi-didier-raoult-porte-plainte-contre-elisabeth-bik-la-chasseuse-de-fraude|access-date=2021-06-05|website=www.heidi.news|date=20 May 2021 |language=fr}}</ref> The petition was signed by thousands of scientists and others throughout the world. By May 22, 2021 Raoult had begun legal proceedings against Bik.<ref name="Guardian">{{Cite web|date=2021-05-22|title=World expert in scientific misconduct faces legal action for challenging integrity of hydroxychloroquine study|url=http://www.theguardian.com/science/2021/may/22/world-expert-in-scientific-misconduct-faces-legal-action-for-challenging-integrity-of-hydroxychloroquine-study|access-date=2021-06-05|website=The Guardian|language=en}}</ref> There followed various articles in international mainstream media supporting Bik,<ref>{{Cite web|last=Dieng|first=Cheikh|date=2021-05-23|title=Covid-19: des scientifiques internationaux déclarent la guerre à Raoult et l'accusent de harcèlement|url=https://lecourrier-du-soir.com/covid-19-des-scientifiques-internationaux-declarent-la-guerre-a-raoult-et-laccusent-de-harcelement/|access-date=2021-06-05|website=Le courrier du soir|language=fr-FR}}</ref> and an article in ''Science'' updated on June 4, 2021 in issue 6546, reporting over 3,000 signatures for the Citizen4Science petition.<ref name="science">{{Cite journal|last=O'Grady|first=Cathleen|date=2021-06-04|title=Image sleuth faces legal threats|url=https://www.science.org/doi/10.1126/science.372.6546.1021|journal=Science|language=en|volume=372|issue=6546|pages=1021–1022|bibcode=2021Sci...372.1021O|doi=10.1126/science.372.6546.1021|issn=0036-8075|pmid=34083467|s2cid=235334811}}</ref>


On May 18, 2021, Lonni Besançon, a French postdoctoral research fellow at ], wrote an open letter supporting Elisabeth Bik.<ref name="besancon-etal-2021">
=== Clinical Microbiology ===
{{cite book
Didier Raoult has for long invested in various aspects of clinical microbiology.<ref>Raoult D, Fournier PE, Drancourt M. What does the future hold for clinical microbiology? Nat Rev Microbiol. 2004 Feb;2(2):151-9. Review.</ref><ref>Fournier PE, Drancourt M, Colson P, Rolain JM, La Scola B, Raoult D. Modern clinical microbiology: new challenges and solutions. Nat Rev Microbiol. 2013 Aug;11(8):574-85.Review.</ref>
| last1 = Besançon | first1 = Lonni
| last2 = Samuel | first2 = Alexander
| last3 = Sana | first3 = Thibault
| last4 = Rebeaud | first4 = Mathieu
| last5 = Guihur | first5 = Anthony
| last6 = Robinson-Rechavi | first6 = Marc
| last7 = Berre | first7 = Nicolas Le
| last8 = Mulot | first8 = Matthieu
| last9 = Meyerowitz-Katz | first9 = Gideon
| last10 = Maisonneuve
| last11 = Nosek | first11 = Brian A
| title = Open letter: Scientists stand up to protect academic whistleblowers and post-publication peer review
| date = 18 May 2021
| doi = 10.31219/osf.io/2awsv
| s2cid = 243194323
| url = https://osf.io/2awsv/
| access-date = 2021-05-22
}}</ref> The letter was co-signed by more than 2200 scientists and 30 ].<ref name="suppmaterialletter">
{{cite book
| last1 = Besançon | first1 = Lonni
| last2 = Samuel | first2 = Alexander
| last3 = Sana | first3 = Thibault
| last4 = Rebeaud | first4 = Mathieu
| last5 = Guihur | first5 = Anthony
| last6 = Robinson-Rechavi | first6 = Marc
| last7 = Berre | first7 = Nicolas Le
| last8 = Mulot | first8 = Matthieu
| last9 = Meyerowitz-Katz | first9 = Gideon
| last10 = Maisonneuve
| last11 = Nosek | first11 = Brian A
| title = Supplementary materials of "Open letter: Scientists stand up to protect academic whistleblowers and post-publication peer review"
| date = 8 May 2021
| doi = 10.17605/OSF.IO/ZKX5H
| s2cid = 236542185
| url = http://dx.doi.org/10.17605/OSF.IO/ZKX5H
| access-date = 2021-06-10}}</ref>


On June 1, 2021, ] published a press release<ref>{{Cite press release |title=The courtroom is not a laboratory |author= |publisher=CNRS |date=7 June 2021 |url= https://www.cnrs.fr/en/courtroom-not-laboratory}}</ref> denouncing the "judiciarization of controversy and scientific debates", condemning Raoult's legal proceedings against Elisabeth Bik. On June 10, 2021, French Senator ] carried the Citizen4Science press release and petition to the ] through a written question to French Minister of Health ], requiring action to protect bearers of science integrity.<ref>{{Cite web|title=Site du sénat|url=https://www.senat.fr/basile/visio.do?id=qSEQ210623282&idtable=q354487%7Cq397890%7Cq390460%7Cq381719%7Cq370118%7Cq398561%7Cq376184%7Cq372285%7Cq376427&_c=parole+scientifique&rch=qs&de=20180611&au=20210611&dp=3+ans&radio=dp&aff=sep&tri=p&off=0&afd=ppr&afd=ppl&afd=pjl&afd=cvn|access-date=2021-06-11|website=www.senat.fr| date=10 June 2021 }}</ref>
His team was one of the first to use an automatic sequencer in a laboratory of clinical microbiology to obtain the sequences of 16S in order to identify the bacteria<ref>Drancourt M, Bollet C, Carlioz A, Martelin R, Gayral JP, Raoult D. 16S ribosomal DNA sequence analysis of a large collection of environmental and clinical unidentifiable bacterial isolates. J Clin Microbiol. 2000 Oct;38(10):3623-30.</ref> Then, his laboratory was the first to systematically use the MALDI-TOF for the identification of bacteria in routine analysis.<ref>Seng P, Drancourt M, Gouriet F, La Scola B, Fournier PE, Rolain JM, Raoult D. Ongoing revolution in bacteriology: routine identification of bacteria by matrix-assisted laser desorption ionization time-of-flight mass spectrometry. Clin Infect Dis. 2009 Aug 15;49(4):543-51.</ref> Didier Raoult was also the first to set up a Point-of-Care laboratory in a hospital, his work has become an international reference.<ref>{{cite journal |doi=10.1016/S1473-3099(13)70165-8 |pmid=23886323 |title=Point-of-care testing for community-acquired pneumonia |journal=The Lancet Infectious Diseases |volume=13 |issue=8 |pages=647–9 |year=2013 |last1=Drancourt |first1=Michel |last2=Gaydos |first2=Charlotte A |last3=Summersgill |first3=James T |last4=Raoult |first4=Didier }}</ref><ref>{{cite journal |doi=10.1128/CMR.00090-15 |pmid=27029593 |pmc=4861988 |title=The Point-of-Care Laboratory in Clinical Microbiology |journal=Clinical Microbiology Reviews |volume=29 |issue=3 |pages=429–47 |year=2016 |last1=Drancourt |first1=Michel |last2=Michel-Lepage |first2=Audrey |last3=Boyer |first3=Sylvie |last4=Raoult |first4=Didier }}</ref>


In December 2022, publisher ] marked 48 articles by Raoult with expressions of concern "about the reported research ethics approval information and the article’s adherence to PLOS research ethics policies".<ref>{{Cite web|title=PLOS flags nearly 50 papers by controversial French COVID researcher for ethics concerns|url=https://retractionwatch.com/2022/12/13/plos-flags-nearly-50-papers-by-controversial-french-covid-researcher-for-ethics-concerns/|website=retractionwatch.com/|date=13 December 2022 }}</ref>
Regarding endocarditis, Didier Raoult's team reported the highest number of cases of endocarditis with negative blood cultures and determined the etiologies of bacteria that were fastidious or destroyed by antibiotics.<ref>{{cite journal |doi=10.1086/653675 |pmid=20540619 |title=Comprehensive Diagnostic Strategy for Blood Culture–Negative Endocarditis: A Prospective Study of 819 New Cases |journal=Clinical Infectious Diseases |volume=51 |issue=2 |pages=131–40 |year=2010 |last1=Fournier |first1=Pierre‐Edouard |last2=Thuny |first2=Franck |last3=Richet |first3=Hervé |last4=Lepidi |first4=Hubert |last5=Casalta |first5=Jean‐Paul |last6=Arzouni |first6=Jean‐Pierre |last7=Maurin |first7=Max |last8=Célard |first8=Marie |last9=Mainardi |first9=Jean‐Luc |last10=Caus |first10=Thierry |last11=Collart |first11=Frédéric |last12=Habib |first12=Gilbert |last13=Raoult |first13=Didier }}</ref> The team of Didier Raoult has proposed a specific treatment for blood cultures negative endocarditis<ref>{{cite journal |doi=10.1093/jac/dkw362 |pmid=27678286 |title=Evaluation of empirical treatment for blood culture-negative endocarditis |journal=Journal of Antimicrobial Chemotherapy |volume=72 |issue=1 |pages=290–298 |year=2017 |last1=Menu |first1=Estelle |last2=Gouriet |first2=Frédérique |last3=Casalta |first3=Jean-Paul |last4=Tissot-Dupont |first4=Hervé |last5=Vecten |first5=Maude |last6=Saby |first6=Ludivine |last7=Hubert |first7=Sandrine |last8=Salaun |first8=Erwan |last9=Theron |first9=Alexis |last10=Grisoli |first10=Dominique |last11=Lavoute |first11=Cécile |last12=Collart |first12=Frédéric |last13=Habib |first13=Gilbert |last14=Raoult |first14=Didier }}</ref> and a new reference in the management of endocarditis which differs from the usual guidelines.<ref>{{cite journal |doi=10.1016/j.cmi.2017.03.007 |pmid=28323194 |title=International experts' practice in the antibiotic therapy of infective endocarditis is not following the guidelines |journal=Clinical Microbiology and Infection |volume=23 |issue=10 |pages=736–739 |year=2017 |last1=Tissot-Dupont |first1=H |last2=Casalta |first2=J.P |last3=Gouriet |first3=F |last4=Hubert |first4=S |last5=Salaun |first5=E |last6=Habib |first6=G |last7=Fernandez-Gerlinger |first7=M.P |last8=Mainardi |first8=J.L |last9=Tattevin |first9=P |last10=Revest |first10=M |last11=Lucht |first11=F |last12=Botelho-Nevers |first12=E |last13=Gagneux-Brunon |first13=A |last14=Snygg-Martin |first14=U |last15=Chan |first15=K.L |last16=Bishara |first16=J |last17=Vilacosta |first17=I |last18=Olmos |first18=C |last19=San Román |first19=J.A |last20=López |first20=J |last21=Tornos |first21=P |last22=Fernández-Hidalgo |first22=N |last23=Durante-Mangoni |first23=E |last24=Utili |first24=R |last25=Paul |first25=M |last26=Baddour |first26=L.M |last27=Desimone |first27=D.C |last28=Sohail |first28=M.R |last29=Steckelberg |first29=J.M |last30=Wilson |first30=W.R |display-authors=29 }}</ref>
In 2022, five papers received an expression of concern from publishers, warning that they may contain errors or be otherwise untrustworthy.<ref name="Retraction Watch Database">{{cite web | url=http://retractiondatabase.org/RetractionSearch.aspx#?auth%3dRaoult%252c%2bDidier | title=Retraction Watch Database }}</ref>
In 2020, another paper was retracted after image manipulations were unmasked.<ref name="Retraction Watch Database"/>


=== Illegal clinical trials ===
While studying pericarditis, Didier Raoult's team reported the largest global series of pericarditis allowing, on the one hand, the etiological diagnosis of these infections and on the other hand, the discovery of viruses unknown in this situation.<ref>{{cite journal |doi=10.1371/journal.pone.0093367 |pmid=24690743 |pmc=3972187 |title=Viral Communities Associated with Human Pericardial Fluids in Idiopathic Pericarditis |journal=PLoS ONE |volume=9 |issue=4 |pages=e93367 |year=2014 |last1=Fancello |first1=Laura |last2=Monteil |first2=Sonia |last3=Popgeorgiev |first3=Nikolay |last4=Rivet |first4=Romain |last5=Gouriet |first5=Frédérique |last6=Fournier |first6=Pierre-Edouard |last7=Raoult |first7=Didier |last8=Desnues |first8=Christelle }}</ref>
In October 2021, the ] online ] journal brought to light illegal ]s of a treatment against tuberculosis, which Raoult and IHU had been conducting since 2017. The trial was started without seeking the mandatory approval of the French clinical trial regulator, and continued despite its strenuous objections to its protocol when they eventually sought permission. Many of the patients in the trial were minors, homeless, or illegal residents, and therefore could not legally consent to a trial.
Several suffered severe side effects such as ] from the known toxicity of one of the four antibiotics combined in the trial, and at least one patient contaminated several family members because the treatment was simultaneously ineffective and poorly monitored by IHU.<ref>{{Cite web|title=Essais "sauvages" sur la tuberculose à l'IHU : que reproche-t-on à Didier Raoult ? |url=https://www.ledauphine.com/sante/2021/10/25/essais-sauvages-a-l-ihu-de-marseille-que-reproche-t-on-a-didier-raoult}}</ref><ref>{{Cite news|title=" Expérimentation sauvage " contre la tuberculose à l'IHU de Marseille : une enquête interne confirme que l'essai n'était pas approuvé|newspaper=Le Monde.fr|date=27 October 2021|url=https://www.lemonde.fr/societe/article/2021/10/27/experimentation-sauvage-contre-la-tuberculose-a-l-ihu-de-marseille-une-enquete-interne-confirme-que-l-essai-n-etait-pas-approuve_6100134_3224.html}}</ref> A subsequent investigation by the French drug safety agency (]) identified grave ethics and safety breaches in IHU clinical trials. Its report was forwarded to the Marseille prosecutor for potential criminal prosecution, and ANSM additionally threatened to suspend all on-going clinical trials at IHU.<ref>{{Cite news|title="Les inspections menées au sein de l'IHU du professeur Raoult révèlent de " graves manquements éthiques "" |newspaper=Le Monde.fr|date=27 May 2022|url=https://www.lemonde.fr/planete/article/2022/04/27/les-inspections-menees-au-sein-de-l-ihu-du-professeur-raoult-revelent-de-graves-manquements-ethiques_6123903_3244.html}}</ref> The prosecutor opened a formal inquiry for falsification and forgery of documentation and for unjustified medical procedures.<ref>{{Cite news|title="Le successeur de Didier Raoult suspend les essais cliniques à l'IHU Méditerranée"|newspaper=Libe.fr|date=7 September 2022|url=https://www.liberation.fr/societe/sante/le-successeur-de-didier-raoult-suspend-les-essais-cliniques-a-lihu-mediterranee-20220907_FANPQZCMXZHXXMTL2DHLHQ5YIU/}}</ref>


In May 2023, researchers representing sixteen French organizations wrote that Raoult and his subordinates engaged in "systematic prescription of medications to patients suffering from Covid-19 without a solid pharmacological basis and lacking any proof of their effectiveness," and that those drugs continued to be prescribed "for more than a year after their ineffectiveness had been absolutely demonstrated."<ref>{{cite news |title=French researchers slam former hospital director for 'unauthorised' Covid trial |url=https://www.france24.com/en/europe/20230528-french-researchers-slam-former-hospital-director-for-unauthorised-covid-trial |access-date=2024-08-30 |work=France 24 |publisher=France 24 |date=2023-05-28}}</ref>
This team has been working on tick-borne diseases since 1984 and has produced a large number of publications on rickettsial diseases, borreliosis, and bartonellosis.{{Citation needed|date=March 2020}}


In January 2024, ] retracted an article after Raoult and his co-authors failed to provide evidence of approval from an appropriate ethics committee.<ref>{{Cite journal|title=Retraction Note: Repertoire of the gut microbiota from stomach to colon using culturomics and next-generation sequencing |date=2024 |doi=10.1186/s12866-023-03167-3 |doi-access=free |last1=Mailhe |first1=Morgane |last2=Ricaboni |first2=Davide |last3=Vitton |first3=Véronique |last4=Gonzalez |first4=Jean-Michel |last5=Bachar |first5=Dipankar |last6=Dubourg |first6=Grégory |last7=Cadoret |first7=Frédéric |last8=Rober |first8=Catherine |last9=Delerce |first9=Jérémy |last10=Levasseur |first10=Anthony |last11=Fournier |first11=Pierre-Edouard |last12=Angelakis |first12=Emmanouil |last13=Lagier |first13=Jean-Christophe |last14=Raoult |first14=Didier |journal=BMC Microbiology |volume=24 |issue=1 |page=10 |pmid=38172679 |pmc=10765687 }}</ref> The ] then retracted seven papers by Raoult and other authors for breaches in human ethical research where the IHU institute gave itself permission to perform studies, but did not get CPP permission, as is required in France.<ref>{{Cite news|title=Retraction for Angelakis et al.|doi=10.1128/aac.01508-23 |url=https://journals.asm.org/doi/10.1128/aac.01508-23}}</ref>
=== Whipple's disease ===
<ref>{{Cite news|title=Retraction for Angelakis et al., "Abnormal Weight Gain and Gut Microbiota Modifications Are Side Effects of Long-Term Doxycycline and Hydroxychloroquine Treatment"|journal=Antimicrobial Agents and Chemotherapy |date=2024 |volume=68 |issue=2 |doi=10.1128/aac.01509-23 |url=https://journals.asm.org/doi/10.1128/aac.01509-23}}</ref>
Tropheryma whipplei, the causative agent of ], described in 1907 by Dr. Georges Hoyt Whipple, was isolated for the first time in the laboratory of Didier Raoult.<ref>{{cite journal |doi=10.1056/NEJM200003023420903 |pmid=10699161 |title=Cultivation of the Bacillus of Whipple's Disease |journal=New England Journal of Medicine |volume=342 |issue=9 |pages=620–5 |year=2000 |last1=Raoult |first1=Didier |last2=Birg |first2=Marie L |last3=Scola |first3=Bernard La |last4=Fournier |first4=Pierre E |last5=Enea |first5=Maryse |last6=Lepidi |first6=Hubert |last7=Roux |first7=Veronique |last8=Piette |first8=Jean-Charles |last9=Vandenesch |first9=François |last10=Vital-Durand |first10=Denis |last11=Marrie |first11=Tom J }}</ref> His team is one of the two teams in the world who sequenced the genome of the bacteria.<ref>{{cite journal |doi=10.1016/S0140-6736(03)14071-8 |pmid=12927433 |title=Genome-based design of a cell-free culture medium for Tropheryma whipplei |journal=The Lancet |volume=362 |issue=9382 |pages=447–9 |year=2003 |last1=Renesto |first1=Patricia |last2=Crapoulet |first2=Nicolas |last3=Ogata |first3=Hiroyuki |last4=La Scola |first4=Bernard |last5=Vestris |first5=Guy |last6=Claverie |first6=Jean-Michel |last7=Raoult |first7=Didier }}</ref> The discovery of ''Tropheryma whipplei'' has completely changed the profile of the disease and it is now accepted that the bacteria is relatively common in the environment or on the mucous membranes of the patients without necessarily being associated with the pathology.<ref>{{cite journal |doi=10.1056/NEJMra062477 |pmid=17202456 |title=Whipple's Disease |journal=New England Journal of Medicine |volume=356 |issue=1 |pages=55–66 |year=2007 |last1=Fenollar |first1=Florence |last2=Puéchal |first2=Xavier |last3=Raoult |first3=Didier }}</ref>
<ref>{{Cite news|title=Retraction for Drali et al., "Detection of a Knockdown Resistance Mutation Associated with Permethrin Resistance in the Body Louse Pediculus humanus corporis by Use of Melting Curve Analysis Genotyping"|journal=Journal of Clinical Microbiology |date=2024 |volume=62 |issue=2 |doi=10.1128/jcm.01505-23 |url=https://journals.asm.org/doi/10.1128/jcm.01505-23}}</ref>
<ref>{{Cite news|title=Retraction for Edouard et al., "High Prevalence of Mycoplasma faucium DNA in the Human Oropharynx"|journal=Journal of Clinical Microbiology |date=2024 |volume=62 |issue=2 |doi=10.1128/jcm.01506-23 |url=https://journals.asm.org/doi/10.1128/jcm.01506-23}}</ref>
<ref>{{Cite news|title=Retraction for Prudent et al., "Fluorescence In Situ Hybridization (FISH) and Peptide Nucleic Acid Probe-Based FISH for Diagnosis of Q Fever Endocarditis and Vascular Infections"|journal=Journal of Clinical Microbiology |date=2024 |volume=62 |issue=2 |doi=10.1128/jcm.01508-23 |url=https://journals.asm.org/doi/10.1128/jcm.01508-23}}</ref>
<ref>{{Cite news|title=Retraction for Belkacemi et al., "Passive Filtration, Rapid Scanning Electron Microscopy, and Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry for Treponema Culture and Identification from the Oral Cavity"|journal=Journal of Clinical Microbiology |date=2024 |volume=62 |issue=2 |doi=10.1128/jcm.01509-23 |url=https://journals.asm.org/doi/10.1128/jcm.01509-23}}</ref>
<ref>{{Cite news|title=Retraction for Amrane et al., "Clostridium scindens Is Present in the Gut Microbiota during Clostridium difficile Infection: a Metagenomic and Culturomic Analysis"|journal=Journal of Clinical Microbiology |date=2024 |volume=62 |issue=2 |doi=10.1128/jcm.01507-23 |url=https://journals.asm.org/doi/10.1128/jcm.01507-23}}</ref>


In October 2024, ] retracted several articles due to due to concerns about compliance with the PLOS Human Subjects Research policy, compliance with the PLOS Animal Research policy and ''PLOS ONE''’s guidelines for articles reporting observational and field studies. <ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Development and Validation of a Microarray for the Investigation of the CAZymes Encoded by the Human Gut Microbiome |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312333 |doi=10.1371/journal.pone.0312333 |doi-access=free |issn=1932-6203 |pmc=11472952 |pmid=39401237|bibcode=2024PLoSO..1912333. }}</ref><ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Molecular Evidence for the Presence of Rickettsia Felis in the Feces of Wild-living African Apes |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312332 |doi=10.1371/journal.pone.0312332 |doi-access=free |issn=1932-6203 |pmc=11472912 |pmid=39401224|bibcode=2024PLoSO..1912332. }}</ref><ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Evidence for an African Cluster of Human Head and Body Lice with Variable Colors and Interbreeding of Lice between Continents |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312331 |doi=10.1371/journal.pone.0312331 |doi-access=free |issn=1932-6203 |pmc=11472936 |pmid=39401199|bibcode=2024PLoSO..1912331. }}</ref><ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Evidence That Head and Body Lice on Homeless Persons Have the Same Genotype |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312328 |doi=10.1371/journal.pone.0312328 |doi-access=free |issn=1932-6203 |pmc=11472928 |pmid=39401225|bibcode=2024PLoSO..1912328. }}</ref><ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Cytomegalovirus and Herpes Simplex Virus Effect on the Prognosis of Mechanically Ventilated Patients Suspected to Have Ventilator-Associated Pneumonia |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312324 |doi=10.1371/journal.pone.0312324 |doi-access=free |issn=1932-6203 |pmc=11472917 |pmid=39401238|bibcode=2024PLoSO..1912324. }}</ref><ref>{{Cite journal |last=Editors |first=The PLOS ONE |date=2024-10-14 |title=Retraction: Specific clones of Trichomonas tenax are associated with periodontitis |journal=PLOS ONE |language=en |volume=19 |issue=10 |pages=e0312329 |doi=10.1371/journal.pone.0312329 |doi-access=free |issn=1932-6203 |pmc=11472949 |pmid=39401210|bibcode=2024PLoSO..1912329. }}</ref>
He introduced a treatment for Whipple's disease that became the reference treatment by doxycycline and Plaquenil<ref>{{cite journal |doi=10.1016/j.jinf.2015.08.003 |pmid=26299894 |title=Doxycycline assay hair samples for testing long-term compliance treatment |journal=Journal of Infection |volume=71 |issue=5 |pages=511–7 |year=2015 |last1=Angelakis |first1=Emmanouil |last2=Armstrong |first2=Nicholas |last3=Nappez |first3=Claude |last4=Richez |first4=Magalie |last5=Chabriere |first5=Eric |last6=Raoult |first6=Didier }}</ref> and describes the acute forms of the disease which include pneumopathies.<ref>{{cite journal |doi=10.3201/eid1602.090610 |pmid=20113556 |pmc=2957999 |title=Tropheryma whippleiin Patients with Pneumonia |journal=Emerging Infectious Diseases |volume=16 |issue=2 |pages=258–63 |year=2010 |last1=Bousbia |first1=Sabri |last2=Papazian |first2=Laurent |last3=Auffray |first3=Jean-Pierre |last4=Fenollar |first4=Florence |last5=Martin |first5=Claude |last6=Li |first6=Wenjun |last7=Chiche |first7=Laurent |last8=La Scola |first8=Bernard |last9=Raoult |first9=Didier }}</ref>


==Honours and awards==
=== Paleomicrobiology ===
{{BLP unreferenced section|date=March 2021}}
Mediterranea Harbour, Marseille was a city exposed to many epidemics. Thanks to a collaboration with ]s and ]s teams, Didier Raoult, Michel Drancourt and Gérard Aboudharam inaugurated the field of paleomicrobiology. They developed an original technique for extracting DNA from the ] and established the first retrospective diagnosis of the Black Death resurgence which took place in Marseille in the early 18th century<ref>{{cite journal |doi=10.1073/pnas.95.21.12637 |pmid=9770538 |title=Detection of 400-year-old Yersinia pestis DNA in human dental pulp: An approach to the diagnosis of ancient septicemia |journal=Proceedings of the National Academy of Sciences |volume=95 |issue=21 |pages=12637–12640 |year=1998 |last1=Drancourt |first1=M |last2=Aboudharam |first2=G |last3=Signoli |first3=M |last4=Dutour |first4=O |last5=Raoult |first5=D |pmc=22883 }}</ref> then confirmed on plague samples from the 14th century that Yersinia pestis was the causal agent of the Black Death.<ref>{{cite journal |doi=10.1073/pnas.220225197 |pmid=11058154 |pmc=18844 |title=Molecular identification by "suicide PCR" of Yersinia pestis as the agent of Medieval Black Death |journal=Proceedings of the National Academy of Sciences |volume=97 |issue=23 |pages=12800–3 |year=2000 |last1=Raoult |first1=D |last2=Aboudharam |first2=G |last3=Crubezy |first3=E |last4=Larrouy |first4=G |last5=Ludes |first5=B |last6=Drancourt |first6=M }}</ref> This work was challenged by MT. Gilbert who for a long time maintained a polemic about the nature of the agent responsible for the Black Death.<ref>{{cite journal |doi=10.1099/mic.0.26594-0 |pmid=14766912 |title=Absence of Yersinia pestis-specific DNA in human teeth from five European excavations of putative plague victims |journal=Microbiology |volume=150 |issue=2 |pages=341–354 |year=2004 |last1=Gilbert |first1=M. T. P }}</ref>
*2003 : Knight of the ] (France)

Didier Raoult's team also showed that the Justinian plague was due to Yersinia pestis and postulated that the extremely rapid transmission of this bacterium was due to the infection of the louse which probably played the role of a relay in this epidemic.<ref>{{cite journal |doi=10.1016/j.cmi.2016.08.031 |pmid=27615720 |title=Molecular history of plague |journal=Clinical Microbiology and Infection |volume=22 |issue=11 |pages=911–915 |year=2016 |last1=Drancourt |first1=M |last2=Raoult |first2=D }}</ref> These techniques also led to the discovery of the cause of the death of a part of the soldiers of Napoleon's army, during the retreat in Russia from a mass grave discovered in ].<ref>{{cite journal |doi=10.1086/498534 |pmid=16323139 |title=Evidence for Louse‐Transmitted Diseases in Soldiers of Napoleon's Grand Army in Vilnius |journal=The Journal of Infectious Diseases |volume=193 |issue=1 |pages=112–20 |year=2006 |last1=Raoult |first1=Didier |last2=Dutour |first2=Olivier |last3=Houhamdi |first3=Linda |last4=Jankauskas |first4=Rimantas |last5=Fournier |first5=Pierre‐Edouard |last6=Ardagna |first6=Yann |last7=Drancourt |first7=Michel |last8=Signoli |first8=Michel |last9=La |first9=Vu Dang |last10=Macia |first10=Yves |last11=Aboudharam |first11=Gérard }}</ref>

The possibilities for discoveries in this field are varied and promising.<ref>Paleomicrobiology, past human infections. Didier Raoult, Michel Drancourt. Springer, Heidelberg. 2008. 226p.{{page needed|date=July 2018}}</ref>

=== Microbiogenomic ===
In 1999, Raoult decided to start a new program of genomics and to apply this to clinical microbiology. The team started with '']'' and since then, 24 bacterial genomes have been sequenced, as well as those of 7 giant viruses (14 of these 31 sequenced genomes having been published).<ref>{{cite journal |doi=10.1016/S1473-3099(07)70260-8 |pmid=17961857 |title=Bacterial genome sequencing and its use in infectious diseases |journal=The Lancet Infectious Diseases |volume=7 |issue=11 |pages=711–23 |year=2007 |last1=Fournier |first1=Pierre-Edouard |last2=Drancourt |first2=Michel |last3=Raoult |first3=Didier }}</ref>

=== Microbial culturomics ===
Microbial culturomics is a field that was created by Didier Raoult's team in 2008 to characterize the multiplication of culture techniques, identification by MALDI-TOF and confirmation by sequencing of the 16S RNA. This culture technique allowed to collect twice as many microbial species as the rest of the laboratories of the world together.<ref name="Rajilić-Stojanović M 1047">Rajilić-Stojanović M, de Vos WM. The first 1000 cultured species of the human gastrointestinal microbiota. FEMS Microbiol Rev. 2014 Sep;38(5):996-1047. Review.</ref>

This new approach to biodiversity is applied to the human microbiota. Thus, in the study described in the journal Nature Microbiology in 2016,<ref>Lagier JC, Khelaifia S, Alou MT, Ndongo S, Dione N, Hugon P, Caputo A, Cadoret F, Traore SI, Seck EH, Dubourg G, Durand G, Mourembou G, Guilhot E, Togo A, Bellali S, Bachar D, Cassir N, Bittar F, Delerce J, Mailhe M, Ricaboni D, Bilen M, Dangui Nieko NP, Dia Badiane NM, Valles C, Mouelhi D, Diop K, Million M, Musso D, Abrahão J, Azhar EI, Bibi F, Yasir M, Diallo A, Sokhna C, Djossou F, Vitton V, Robert C, Rolain JM, La Scola B, Fournier PE, Levasseur A, Raoult D. Culture of previously uncultured members of the human gut microbiota by culturomics. Nat Microbiol. 2016 Nov 7;1:16203.</ref> nearly 1,000 samples from the human digestive tract (stool, stomach, small intestine, and colon) were analyzed, 1 170 different bacteria present in the digestive tract could be grown, including 247 completely new bacterial species. In addition, 269 bacteria that were known only in the environment were isolated for the first time in humans, and 250 bacteria that had already been isolated in humans but never in the digestive tract. All these new bacteria species are available in international collections of strains (Collection de Souches de l'Unité des Rickettsies, and Deutsche Sammlung von Mikroorganismen und Zellkulturen).

In a work carried out by the laboratory and published in Clinical Microbiology and Infection in September 2012,<ref>Lagier JC, Armougom F, Million M, Hugon P, Pagnier I, Robert C, Bittar F, Fournous G, Gimenez G, Maraninchi M, Trape JF, Koonin EV, La Scola B, Raoult D. Microbial culturomics: paradigm shift in the human gut microbiome study. Clin Microbiol Infect. 2012 Dec;18(12):1185-93.</ref> this technique allows to achieve five world records:
* The largest number of bacterial species isolated from human stools,
* The largest virus isolated in humans to date,
* The largest bacteria isolated in humans to date,
* The largest number of entirely new bacterial species found in a single work (31 species),
More than 30% of the cultured intestinal microorganisms have been identified by the team according to a recent review.<ref name="Rajilić-Stojanović M 1047"/> In fact, this approach of the digestive microbiota has led to a rethinking of the role of the microbiota in malnutrition.<ref>Million M, Tidjani Alou M, Khelaifia S, Bachar D, Lagier JC, Dione N, Brah S, Hugon P, Lombard V, Armougom F, Fromonot J, Robert C, Michelle C, Diallo A, Fabre A, Guieu R, Sokhna C, Henrissat B, Parola P, Raoult D. Increased Gut Redox and Depletion of Anaerobic and Methanogenic Prokaryotes in Severe Acute Malnutrition. Sci. Rep. 2016 May 17;6:26051.</ref>

This high-throughput production of new species has made it compulsory to create a new approach to describing species called Taxonogenomics.<ref>Hugon P, Ramasamy D, Robert C, Couderc C, Raoult D, Fournier PE. Non-contiguous finished genome sequence and description of Kallipyga massiliensis gen. nov., sp. nov., a new member of the family Clostridiales Incertae Sedis XI. Stand Genomic Sci. 2013 Jul 30;8(3):500-15.</ref><ref>Fournier PE, Drancourt M. New Microbes New Infections promotes modern prokaryotic taxonomy: a new section "TaxonoGenomics: new genomes of microorganisms in humans". New Microbes New Infect. 2015 Jun 9;7:48-9.</ref>

=== Probiotics ===
The last field of research developed by Raoult represents for him a major question of public health. It relates to the effects of ]s and ] on the ] of human beings and their possible effects on ] and ].<ref>{{cite journal
|last=Raoult|first=D
|title=Human microbiome: take-home lesson one growth promoters?
|journal=Nature|year=2008|volume=454|pages=690–1
|doi=10.1038/454690c
|pmid=18685678
|issue=7205}}</ref><ref>{{cite journal |vauthors=Angelakis E, Merhej V, Raoult D |title=Related actions of probiotics and antibiotics on gut microbiota and weight modification |journal=The Lancet. Infectious Diseases |volume=13 |issue=10 |pages=889–99 |year=2013 |pmid=24070562 |doi=10.1016/S1473-3099(13)70179-8 |type=Review}}</ref> This is of particular relevance in terms of investigating possible causes of ].<ref name="angelakis-etal-2012">{{cite journal |vauthors=Angelakis E, Armougom F, Million M, Raoult D |title=The relationship between gut microbiota and weight gain in humans |journal=Future Microbiology |volume=7 |issue=1 |pages=91–109 |year=2012 |pmid=22191449 |doi=10.2217/fmb.11.142 |type=Review.}}</ref>

In the journal ''Nature Reviews Microbiology'' of September 2009, Raoult indicated: "humans, particularly children, have been taking these same probiotics for many years, especially in ]" and they would have their share of responsibility in the human ].<ref>{{cite journal|title=Probiotics and obesity: a link?|journal=Nature Reviews Microbiology|volume=7|issue=9|date=September 2009|last=Raoult|first=D|doi=10.1038/nrmicro2209|pages=616|pmid=21548178}}</ref>

In 2012, he and his co-workers reported on host-specific effects of ] species on weight change.<ref name="pmid22634320">{{cite journal |vauthors=Million M, Angelakis E, Paul M, Armougom F, Leibovici L, Raoult D |title=Comparative meta-analysis of the effect of Lactobacillus species on weight gain in humans and animals |journal=Microbial Pathogenesis |volume=53 |issue=2 |pages=100–8 |date=August 2012 |pmid=22634320 |doi=10.1016/j.micpath.2012.05.007 }}</ref> His view that Lactobacillus may contribute to weight gain in some humans<ref name="pmid23332210">{{cite journal |vauthors=Million M, Raoult D |title=Species and strain specificity of Lactobacillus probiotics effect on weight regulation |journal=Microbial Pathogenesis |volume=55 |issue= |pages=52–4 |date=February 2013 |pmid=23332210 |doi=10.1016/j.micpath.2012.09.013 |url=}}</ref> is controversial.<ref name="pmid22968407">{{cite journal |vauthors=Lahtinen SJ, Davis E, Ouwehand AC |title=Lactobacillus species causing obesity in humans: where is the evidence? |journal=Beneficial Microbes |volume=3 |issue=3 |pages=171–4 |date=September 2012 |pmid=22968407 |doi=10.3920/BM2012.0041 |url=}}</ref> According to Raoult, recent research results "suggest that manipulating the composition of the gut microbiota may prevent weight gain or facilitate weight loss in humans".<ref name="angelakis-etal-2012" />

=== HIV en route to endogenization ===
A work led by Didier Raoult and published in 2014 made an analogy between the evolution of the koala retroviruses that currently experience on-going endogenization and apparent spontaneous cure of HIV infection in 2 patients never treated with antiretrovirals and with no HIV-related clinical symptoms and no HIV RNA or DNA detected in the blood by standard diagnostic tests. HIV sequences obtained from these two patients using modern sequencing technologies showed that HIV genes were inactivated by replacement of tryptophan codons by stop codons, which is probably due to the action of a cellular enzyme, APOBEC. This work is a paradigm shift in HIV research that considered eradication of any HIV DNA from patients cells as a necessary step towards a possible cure. It provides opportunities for assessment of the chances for patients of a spontaneously favorable course of HIV infection, and for treatment through the use of APOBEC.<ref>{{cite journal |doi=10.1111/1469-0691.12807 |pmid=25366539 |pmc=4360783 |title=HIV infection en route to endogenization: Two cases |journal=Clinical Microbiology and Infection |volume=20 |issue=12 |pages=1280–8 |year=2014 |last1=Colson |first1=P |last2=Ravaux |first2=I |last3=Tamalet |first3=C |last4=Glazunova |first4=O |last5=Baptiste |first5=E |last6=Chabriere |first6=E |last7=Wiedemann |first7=A |last8=Lacabaratz |first8=C |last9=Chefrour |first9=M |last10=Picard |first10=C |last11=Stein |first11=A |last12=Levy |first12=Y |last13=Raoult |first13=D }}</ref>

=== COVID-19 ===
On 17 March 2020, Raoult announced that a trial involving 36 patients from the south east of France supported the claim that ] and ] were effective in treating for COVID-19.<ref>{{Cite web|url=https://www.mediterranee-infection.com/coronavirus-diagnostiquons-et-traitons-premiers-resultats-pour-la-chloroquine/|title=Coronavirus : diagnostiquons et traitons ! Premiers résultats pour la chloroquine – IHU|language=fr-FR|access-date=2020-03-18}}</ref><ref>{{Cite web|url=https://www.connexionfrance.com/French-news/French-researcher-in-Marseille-posts-successful-Covid-19-coronavirus-drug-trial-results|title=French researcher posts successful Covid-19 drug trial|last=France|first=Connexion|website=www.connexionfrance.com|language=en|access-date=2020-03-18}}</ref><ref>, The Actual Scientific Paper Published by Didier Raoult, supporting a treatment for COVID-19 .</ref> The design of the study as well as its conclusions are controversially discussed and generally viewed as flawed and inconclusive. <ref>{{Cite web|url=https://pubpeer.com/publications/E09AC9D25125B0AB077971FBA6DD7B#7|title=Pubpeer: Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial}}</ref> <ref>{{Cite web|url=https://pubpeer.com/publications/B4044A446F35DF81789F6F20F8E0EE|title=Pubpeer: Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial - preprint}}</ref> The French Health Minister, ], was reported as announcing that "new tests will now go ahead in order to evaluate the results by Professor Raoult, in an attempt to independently replicate the trials and ensure the findings are scientifically robust enough, before any possible decision might be made to roll any treatment out to the wider public".<ref>{{Cite web|url=https://www.connexionfrance.com/French-news/French-lab-Sanofi-hypothetically-offers-millions-of-doses-of-potential-Covid-19-Plaquenil-anti-malaria-drug|title=French lab offers ‘millions of doses’ of Covid-19 drug|last=France|first=Connexion|website=www.connexionfrance.com|language=en|access-date=2020-03-19}}</ref> The French media also reported that the French pharmaceutical company Sanofi had offered French authorities millions of doses of the drug for use against COVID-19.<ref>{{Cite web|url=https://www.connexionfrance.com/French-news/French-lab-Sanofi-hypothetically-offers-millions-of-doses-of-potential-Covid-19-Plaquenil-anti-malaria-drug|title=French lab offers ‘millions of doses’ of Covid-19 drug|last=France|first=Connexion|website=www.connexionfrance.com|language=en|access-date=2020-03-19}}</ref><ref>{{Cite web|url=https://pubpeer.com/publications/E09AC9D25125B0AB077971FBA6DD7B#7|title=Pubpeer: Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial}}</ref><ref>{{Cite web|url=https://pubpeer.com/publications/B4044A446F35DF81789F6F20F8E0EE|title=Pubpeer: Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial - preprint}}</ref>

== Controversies ==
=== Climate change ===
In October 2013, Didier Raoult published an article in the French magazine '']'' in which he expressed his scepticism about mathematical models for climate prediction.<ref>https://www.lepoint.fr/invites-du-point/didier_raoult/les-predictions-climatiques-sont-absurdes-08-10-2013-1740365_445.php</ref> He said in particular that mathematical models are the modern version of divination. In an article dated 1 November 2014,<ref>{{Cite web|url=https://www.lepoint.fr/editos-du-point/sebastien-le-fol/le-climat-science-ou-religion-01-11-2014-1877726_1913.php|title=Le climat, science ou religion ?|last=Raoult|first=Didier|date=2014-11-01|website=Le Point|language=fr|access-date=2020-03-27}}</ref> he ironically notes, in reference to the "]" in global warming since the late 1990s, that "nature has forgotten to obey predictions. "In the same publication, in reference to an article published shortly before in the journal Nature, according to which the Earth's global temperature is no longer a good indicator of global warming, he commented: "It's better to break the thermometer that contradicts you!"

In ''Le Point'', in June 2014, he estimates that "after a significant thermal surge in the 1990s, the Earth has generally stopped warming since 1998". He concludes that "global warming is uncertain and human responsibility is questionable".{{Citation needed|date=March 2020}}

Stéphane Foucart, a science journalist at '']'', criticises him as one of those who propagate "climatic hoaxes".{{Citation needed|date=March 2020}}

== Honours ==
{| class="wikitable" style="width:100%;"
|-
! style="width:80px;"| Ribbon bar !! Country !! Honour
|-
| ] || ] || Officier of the ]
|-
| ] || ] || Commander of the ]
|}

==Awards==
* 2002 : European Society for Clinical Microbiology and Infectious Diseases Excellence Award (France)
* 2003 : Jean Valade Prize (Fondation pour la recherche médicale, France)
* 2005 : Medical grand round (Chicago, USA)
* 2008 : Sackler International Prize (]) * 2008 : Sackler International Prize (])
* 2009 : Eloi Collery Prize (]) * 2009 : Eloi Collery Prize (])
* 2010 : Inserm Prize (France) * 2010 : ] (France)
* 2015 : ] (]) * 2015 : ] (])
* 2021 : Commander of the ] (Senegal) <ref>{{cite web|title=Didier Raoult prophète en " son " Sénégal ?| url=https://www.jeuneafrique.com/1146591/politique/chronique-didier-raoult-prophete-en-son-senegal/|website=jeuneafrique.com|language=fr|date=2021-01-03|access-date=2022-07-05|publication-date=2021-01-03}}</ref>

* 2021 : Rusty Razor Award for ] (] magazine)<ref>{{cite web|title=French scientist Didier Raoult given Rusty Razor Award for pseudoscience|url=https://www.skeptic.org.uk/2020/11/french-scientist-didier-raoult-given-rusty-razor-award-for-pseudoscience/|website=skeptic.org.uk|language=en|date=2020-11-19|access-date=2021-05-11}}</ref>
== Bibliography ==
# Kazar J, Raoult D. ''Rickettsiae and Rickettsial diseases''. Slovak Academy of Sciences ed. Publishing House of the Slovak Academy of Sciences, 1991.
# Argenson JN, Aubaniac JM, Curvale G, Groulier P, Drancourt M, Raoult D. ''L'infection ostéoarticulaire sur prothèse – Prévention, Diagnostic, Traitement''. 1992.
# Raoult D. ''Antimicrobial Agents and Intracellular Parasites''. Boca Raton: CRC Press Book, 1993
# Mege JL, Revillard JP, Raoult D. ''Immunité et Infection – Concepts immunologiques et perspectives thérapeutiques''. Arnette, 1997.
# Raoult D. ''Maîtrise de la prescription des antibiotiques dans les hôpitaux''. Elsevier ed. Paris: Elsevier, 1998.
# Raoult D. ''Dictionnaire de maladies infectieuses''. Paris: Elsevier, 1998.
# Yu VL, Merigan TC, Barriere SL, et al. ''Antimicrobial Therapy and Vaccines''. Williams & Wilkins, 1998.
# Raoult D, Nigoghossian JP, Cartapanis A. ''L'Université de la Méditerranée face aux défis du troisième millénaire''. 1999.
# Raoult D, Tilton R. ''Dictionnary of Infectious Diseases''. Elsevier ed. Paris: Elsevier, 1999.
# Raoult D. ''Les nouvelles maladies infectieuses''. Que sais-je? ed. Paris: Presse Universitaires de France, 1999.
# Raoult D, Brouqui P. ''Rickettsiae and Rickettsial Diseases at the Turn of the Third Millennium''. Paris: Elsevier, 1999.
# Yu VL, Weber R, Raoult D. ''Antimicrobial Therapy and Vaccine''. 2d ed. New York: Apple Trees Production, LLC, 2002.
# Hechemy KE, Avsic-Zupanc T, Childs JE, Raoult DA. Rickettsiology – present and Future Directions. Annals of the New York Academy of Sciences ed. United States of America: K-M Research/PCP, 2003.
# Hechemy KE, Oteo JA, Raoult DA, Silverman DJ, Blanco JR. Rickettsioses – From Genome to proteome, Pathobiology, and Rickettsiae as an International Threat. Annals of the New York Academy of Sciences ed. New York: GYAT/PCP, 2005.
# Raoult D. ''Les nouveaux risques infectieux, grippe aviaire, SRAS et après'' ? Paris: Lignes de Repères, 2005.
# Hechemy KE, Oteo JA, Raoult DA, Silverman DJ, Blanco JR. Century of Rickettsiology – Emerging, reemerging Rickettsioses, Molecular Diagnostics, and Emerging Veterinary Rickettsioses. Annals of the New York Academy of Sciences ed. Boston,USA: Blackwell Publishing, 2006.
# Raoult D, Parola P. ''Rickettsial Diseases''. New York: Informa Healthcare USA, Inc, 2007.
# Raoult D, Drancourt M. ''Paleomicrobiology – Past Human Infection'', Springer, 2008.
# Raoult D. ''Dépasser Darwin'', Plon, 2010.
# Didier Raoult, Eugene V Koonin, "Microbial genomics challenge Darwin", Frontiers in Cellular and Infection Microbiology, octobre 2012 (DOI 10.3389/fcimb.2012.00127)
# Raoult D. Grippe aviaire, SRAS : vivre avec les nouveaux risques infectieux, 2012
# Raoult D. ''De l'ignorance et de l'aveuglement : pour une science postmoderne.'' Ebook Kindle, Amazon, 2012.
# Raoult D. (en) ''Of Ignorance and Blindness'', 2013, Ebook Kindle, Amazon.
# Raoult D. ''Votre santé&nbsp;: Tous les mensonges qu'on vous raconte et comment la science vous aide à y voir clair'' (en collaboration avec Sabine Casalonga), Michel Lafon, 2015.
# Raoult D. ''Arrêtons d'avoir peur !,'' Paris, Michel Lafon, 2016 ({{ISBN|9782749930039}}).
# Raoult D. ''Mieux vaut guérir que prédire'', Paris, Michel Lafon, 2017 ({{ISBN|9782749932378}}).


== References == == References ==
{{reflist}} {{Reflist}}

== Further reading ==
{{Scholia|author}}
* "Rencontre avec un chercheur de microbes", in ''Le Point'', 1 January 2009, n° 1894.
* "Dépasser Darwin" (Beyond Darwin) 2011


== External links == == External links ==
* {{official|http://didierraoult.com/}} * {{official website|http://didierraoult.com/}}
*
* {{YouTube|ifr48|IHU Méditerranée infection}}
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Latest revision as of 19:10, 17 December 2024

French biology researcher

Didier Raoult
Raoult in 2021
Born (1952-03-13) 13 March 1952 (age 72)
Dakar, French West Africa (present-day Senegal)
NationalityFrench
SpouseNatacha Caïn
Children3
Scientific career
FieldsMicrobiology
Infectious disease
InstitutionsIHU Méditerranée Infection
Aix-Marseille University

Didier Raoult (French pronunciation: [didje ʁa.ul(t)]; born 13 March 1952) is a retired French physician and microbiologist specialising in infectious diseases. He taught about infectious diseases at the Faculty of Medicine of Aix-Marseille University (AMU), and in 1984, created the Rickettsia Unit of the university. From 2008 to 2022, Raoult was the director of the Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes. He gained significant worldwide attention during the COVID-19 pandemic for vocally promoting hydroxychloroquine as a treatment for the disease, despite lack of evidence for its effectiveness and the subsequent opposition from NIH and WHO to its use for the treatment of COVID-19 in hospitalized patients.

As of 2024, 28 of Raoult's research publications have been retracted, and at least another 218 of his publications have received an expression of concern from their publishers, due to questions related to ethics approval for his studies.

Personal life

Raoult was born on 13 March 1952 in Dakar, French West Africa (present-day Senegal). Raoult's father, who came from Brittany, was serving there as a military doctor; his mother, originally from Marseille, was a nurse. His family returned to France in 1961, and settled in Marseille. He was for a time schooled in Nice, then attended a boarding school in Briançon.

A poor student, Raoult repeated a year at high school, then dropped out in the second year of high school to board a French merchant ship called Renaissance and spent the next two years at sea.

In 1972, he sat his baccalauréat in literature as an independent candidate, and registered at the medical school in Marseille. Believing in a family tradition in medicine, Raoult senior refused to pay for his studies in any other subject. Raoult had wanted to become an obstetrician after qualifying, but his grade in the resident's examination was too low for that choice. He specialised instead in infectious diseases, in the footsteps of his great-grandfather Paul Legendre (1854–1936).

In 1982, Raoult married psychiatrist and novelist Natacha Caïn (born 1960). They have two children, and Raoult has an estranged daughter from a previous marriage, angiologist Magali Carcopino-Tusoli.

Career

From 2008 to 2022, Raoult was the director of the Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes, (URMITE; in English, Infectious and Tropical Emergent Diseases Research Unit), which employs more than 200 people. He retired in the summer of 2022, after being allowed to stay on for at most one year after retiring from his professor position on August 31, 2021.

Raoult was awarded the Grand prix de l'Inserm in 2010 and in 2015 shared the €450,000 prize of the Grand Prix scientifique de la Fondation Louis D. of the Institut de France with biologist Chris Bowler from the Institut de Biologie de l'Ecole Normale Supérieure in Paris. The bacteria genus Raoultella was named in his honor by his right-hand man and longest-serving collaborator, Michel Drancourt.

Raoult initiated the construction of a new building to host the Institut hospitalo-universitaire (IHU) Méditerranée Infection. The IHU Mediterranée Infection, which opened in early 2017, is dedicated to the management and study of infectious diseases and combines diagnostic, care, research and teaching activities in one location.

In May 2022 the French drug safety agency ANSM announced it would file charges against the IHU for potentially criminal research misconduct during the COVID-19 pandemic.

In June 2022, ANSM implemented "a series of particularly severe sanctions" against the Raoult-led IHU.

In September 2022 it was reported that Raoult's laboratory was being investigated by the Aix-Marseille University for “serious malfunctions,” that in response to this "scientific misconduct investigation by the University of Aix Marseille" four papers from Raoult's group appearing in journals published by the American Society for Microbiology had received expressions of concern, and that a criminal investigation had been initiated.

Citations

Raoult has more than 2,300 indexed publications. As of 2008, he was "classified among the ten leading French researchers by the journal Nature, for the number of his publications (more than two thousand) and for his citation number". According to ISI Web of Knowledge, he was the most cited microbiologist in Europe in 2014, and the seventh worldwide. According to the Thomson Reuters source "Highly Cited Researchers List", Raoult is among the most influential researchers in his field and his publications are among the 1% most consulted in academic journals. He is one of the 99 most cited microbiologists in the world and one of the 73 most highly cited French scientists. He is a world reference for Q fever and Whipple's disease. As of January 2022, he had over 194,000 citations and an h-index of 197. He is also on the list of the 400 most cited authors in the biomedical world. Raoult is also one of the 7.3% most self-cited authors, more than 25% of his citations coming from papers he co-authored.

Yet, Raoult's extremely uncommon and high publication rate results from his "attaching his name to nearly every paper that comes out of his institute", a practice that has been called "grossly unethical" by Steven Salzberg. Since 2013 he has been one of the overseas scientists co-affiliated with the King Abdulaziz University of Jeddah, Saudi Arabia, known to "offer highly cited researchers lucrative adjunct professorships, with minimal requirements for them to be physically present, in return for being listed by them as a secondary affiliation", and so increase its own institutional citation index.

Of the 1,836 articles published by Raoult between 1995 and 2020 (amounting to over 120 a year, or approximately one article every three days), 230 were published in two journals edited by Michel Drancourt, who was his right-hand man at the IHU and a close collaborator for over 35 years. Staff members have editorial positions at almost half the journals that have published Raoult's work. The funding of French health institutes according to their number of publications has been suggested to be at the root of his large number of publications.

Controversies

American Society for Microbiology publishing ban

In 2006, Raoult and four co-authors were banned for one year from publishing in the journals of the American Society for Microbiology (ASM), after a reviewer for Infection and Immunity discovered that four figures from the revised manuscript of a paper about a mouse model for typhus were identical to figures from the originally submitted manuscript, even though they were supposed to represent a different experiment. In response, Raoult "resigned from the editorial board of two other ASM journals, canceled his membership in the American Academy of Microbiology, ASM's honorific leadership group, and banned his lab from submitting to ASM journals". In response to Science covering the story in 2012, he stated that, "I did not manage the paper and did not even check the last version". The paper was subsequently published in a different journal.

COVID-19

See also: COVID-19 pandemic in France, Misinformation related to the COVID-19 pandemic, and Chloroquine and hydroxychloroquine during the COVID-19 pandemic

On 17 March 2020, Raoult announced in an online video that a trial involving 24 patients from southeast France supported the claim that hydroxychloroquine and azithromycin were effective in treating for COVID-19. On 20 March, he published a preliminary report of his study online in the International Journal of Antimicrobial Agents.  The French Health Minister, Olivier Véran, was reported as announcing that "new tests will now go ahead in order to evaluate the results by Professor Raoult, in an attempt to independently replicate the trials and ensure the findings are scientifically robust enough, before any possible decision might be made to roll any treatment out to the wider public". Véran refused to endorse the study conducted by Raoult and the possible health ramifications, on the basis of a single study conducted on 24 people. The study was retracted on 17 December 2024 over a lack of informed consent for patients and after scientists—including three of its co-authors—raised concerns over methodological problems.

The French media also reported that the French pharmaceutical company Sanofi had offered French authorities millions of doses of the drug for use against COVID-19. On 3 April, the International Society of Antimicrobial Chemotherapy, which publishes the journal, issued a statement that the report on the non-blind, non-randomized study "does not meet the Society's expected standard, especially relating to the lack of better explanations of the inclusion criteria and the triage of patients to ensure patient safety."

Raoult was one of 11 prominent scientists named on 11 March to a committee to advise on scientific matters pertaining to the epidemic in France. He did not attend any of the meetings and resigned from the committee on 24 March saying that he refused to participate. He denounced the "absence of anything scientifically sound", and criticised its members for "not having a clue". He defended chloroquine as a benchmark drug for lung diseases, saying that it had suddenly been declared dangerous after having been safely used for 80 years. Following reports and a complaint filed in July by the French-speaking Society of Infectious Pathology (Spilf), the departmental council of the French Order of Physicians opened a formal case against Didier Raoult.

Accusations of falsified images, and legal threats

On May 5, 2021, Elisabeth Bik (who specializes in identifying manipulated images in scientific papers) raised concerns about dozens of Raoult's papers—including ethical, procedural, and methodological problems in a March 2020 paper reporting success in a small hydroxychloroquine trial. Raoult's lawyer subsequently announced that Raoult was accusing and suing the scientific integrity consultant of harassment and blackmail. The French non-profit association Citizen4Science, formed by scientists and citizens, published a press release and a petition that day, denouncing the harassment of scientists and defenders of science integrity, specifically defending Bik and calling on French authorities to intervene and for journalists to look into the matter. Several French newspapers immediately reported Citizen4Science's initiative. The petition was signed by thousands of scientists and others throughout the world. By May 22, 2021 Raoult had begun legal proceedings against Bik. There followed various articles in international mainstream media supporting Bik, and an article in Science updated on June 4, 2021 in issue 6546, reporting over 3,000 signatures for the Citizen4Science petition.

On May 18, 2021, Lonni Besançon, a French postdoctoral research fellow at Monash University, wrote an open letter supporting Elisabeth Bik. The letter was co-signed by more than 2200 scientists and 30 scholarly societies.

On June 1, 2021, CNRS published a press release denouncing the "judiciarization of controversy and scientific debates", condemning Raoult's legal proceedings against Elisabeth Bik. On June 10, 2021, French Senator Bernard Jomier carried the Citizen4Science press release and petition to the French Senate through a written question to French Minister of Health Olivier Véran, requiring action to protect bearers of science integrity.

In December 2022, publisher PLOS marked 48 articles by Raoult with expressions of concern "about the reported research ethics approval information and the article’s adherence to PLOS research ethics policies".

In 2022, five papers received an expression of concern from publishers, warning that they may contain errors or be otherwise untrustworthy. In 2020, another paper was retracted after image manipulations were unmasked.

Illegal clinical trials

In October 2021, the Mediapart online investigative journal brought to light illegal clinical trials of a treatment against tuberculosis, which Raoult and IHU had been conducting since 2017. The trial was started without seeking the mandatory approval of the French clinical trial regulator, and continued despite its strenuous objections to its protocol when they eventually sought permission. Many of the patients in the trial were minors, homeless, or illegal residents, and therefore could not legally consent to a trial. Several suffered severe side effects such as kidney failure from the known toxicity of one of the four antibiotics combined in the trial, and at least one patient contaminated several family members because the treatment was simultaneously ineffective and poorly monitored by IHU. A subsequent investigation by the French drug safety agency (ANSM) identified grave ethics and safety breaches in IHU clinical trials. Its report was forwarded to the Marseille prosecutor for potential criminal prosecution, and ANSM additionally threatened to suspend all on-going clinical trials at IHU. The prosecutor opened a formal inquiry for falsification and forgery of documentation and for unjustified medical procedures.

In May 2023, researchers representing sixteen French organizations wrote that Raoult and his subordinates engaged in "systematic prescription of medications to patients suffering from Covid-19 without a solid pharmacological basis and lacking any proof of their effectiveness," and that those drugs continued to be prescribed "for more than a year after their ineffectiveness had been absolutely demonstrated."

In January 2024, BMC Microbiology retracted an article after Raoult and his co-authors failed to provide evidence of approval from an appropriate ethics committee. The American Society for Microbiology then retracted seven papers by Raoult and other authors for breaches in human ethical research where the IHU institute gave itself permission to perform studies, but did not get CPP permission, as is required in France.

In October 2024, Plos One retracted several articles due to due to concerns about compliance with the PLOS Human Subjects Research policy, compliance with the PLOS Animal Research policy and PLOS ONE’s guidelines for articles reporting observational and field studies.

Honours and awards

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References

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  88. "Retraction for Edouard et al., "High Prevalence of Mycoplasma faucium DNA in the Human Oropharynx"". Journal of Clinical Microbiology. Vol. 62, no. 2. 2024. doi:10.1128/jcm.01506-23.
  89. "Retraction for Prudent et al., "Fluorescence In Situ Hybridization (FISH) and Peptide Nucleic Acid Probe-Based FISH for Diagnosis of Q Fever Endocarditis and Vascular Infections"". Journal of Clinical Microbiology. Vol. 62, no. 2. 2024. doi:10.1128/jcm.01508-23.
  90. "Retraction for Belkacemi et al., "Passive Filtration, Rapid Scanning Electron Microscopy, and Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry for Treponema Culture and Identification from the Oral Cavity"". Journal of Clinical Microbiology. Vol. 62, no. 2. 2024. doi:10.1128/jcm.01509-23.
  91. "Retraction for Amrane et al., "Clostridium scindens Is Present in the Gut Microbiota during Clostridium difficile Infection: a Metagenomic and Culturomic Analysis"". Journal of Clinical Microbiology. Vol. 62, no. 2. 2024. doi:10.1128/jcm.01507-23.
  92. Editors, The PLOS ONE (14 October 2024). "Retraction: Development and Validation of a Microarray for the Investigation of the CAZymes Encoded by the Human Gut Microbiome". PLOS ONE. 19 (10): e0312333. Bibcode:2024PLoSO..1912333.. doi:10.1371/journal.pone.0312333. ISSN 1932-6203. PMC 11472952. PMID 39401237. {{cite journal}}: |last= has generic name (help)
  93. Editors, The PLOS ONE (14 October 2024). "Retraction: Molecular Evidence for the Presence of Rickettsia Felis in the Feces of Wild-living African Apes". PLOS ONE. 19 (10): e0312332. Bibcode:2024PLoSO..1912332.. doi:10.1371/journal.pone.0312332. ISSN 1932-6203. PMC 11472912. PMID 39401224. {{cite journal}}: |last= has generic name (help)
  94. Editors, The PLOS ONE (14 October 2024). "Retraction: Evidence for an African Cluster of Human Head and Body Lice with Variable Colors and Interbreeding of Lice between Continents". PLOS ONE. 19 (10): e0312331. Bibcode:2024PLoSO..1912331.. doi:10.1371/journal.pone.0312331. ISSN 1932-6203. PMC 11472936. PMID 39401199. {{cite journal}}: |last= has generic name (help)
  95. Editors, The PLOS ONE (14 October 2024). "Retraction: Evidence That Head and Body Lice on Homeless Persons Have the Same Genotype". PLOS ONE. 19 (10): e0312328. Bibcode:2024PLoSO..1912328.. doi:10.1371/journal.pone.0312328. ISSN 1932-6203. PMC 11472928. PMID 39401225. {{cite journal}}: |last= has generic name (help)
  96. Editors, The PLOS ONE (14 October 2024). "Retraction: Cytomegalovirus and Herpes Simplex Virus Effect on the Prognosis of Mechanically Ventilated Patients Suspected to Have Ventilator-Associated Pneumonia". PLOS ONE. 19 (10): e0312324. Bibcode:2024PLoSO..1912324.. doi:10.1371/journal.pone.0312324. ISSN 1932-6203. PMC 11472917. PMID 39401238. {{cite journal}}: |last= has generic name (help)
  97. Editors, The PLOS ONE (14 October 2024). "Retraction: Specific clones of Trichomonas tenax are associated with periodontitis". PLOS ONE. 19 (10): e0312329. Bibcode:2024PLoSO..1912329.. doi:10.1371/journal.pone.0312329. ISSN 1932-6203. PMC 11472949. PMID 39401210. {{cite journal}}: |last= has generic name (help)
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