{"id":271,"date":"2026-05-30T20:54:09","date_gmt":"2026-05-30T18:54:09","guid":{"rendered":"https:\/\/experimenthe-blog.com\/?p=271"},"modified":"2026-05-30T21:17:08","modified_gmt":"2026-05-30T19:17:08","slug":"didier-raoult-and-the-hydroxychloroquine-saga-when-science-took-a-holiday-in-marseille","status":"publish","type":"post","link":"https:\/\/experimenthe-blog.com\/index.php\/2026\/05\/30\/didier-raoult-and-the-hydroxychloroquine-saga-when-science-took-a-holiday-in-marseille\/","title":{"rendered":"Didier Raoult and the Hydroxychloroquine Saga: When Science Took a Holiday in Marseille"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If you live in Marseille, you know the IHU building: shiny glass, palm trees, Mediterranean sun. Looks like a high-tech temple of science. But during the COVID pandemic, it became something else: ground zero for a global hype train, led by Professor Didier Raoult &#8211; microbiologist, YouTube star, and man with the most famous beard in French science.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-1024x1024.png\" alt=\"\" class=\"wp-image-273\" srcset=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-1024x1024.png 1024w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-300x300.png 300w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-150x150.png 150w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-768x768.png 768w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult-1536x1536.png 1536w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-Raoult.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><sup><strong>Figure 1<\/strong><em>: Notre Raoult de la Garde. Drawing by Karen. <\/em><\/sup><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Paper That Launched a Thousand Headlines<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You remember march 2020? Corona. Panic everywhere. No vaccines yet. Everyone\u2019s desperate for a cure (while vigorously baking banana bread, obviously). But also, a big moment for many researchers that were pushed into spotlight, trying to explain and offer a scientifically founded solution for a never-before-seen crisis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enter Raoult\u2019s team of the IHU with a paper in the <em>International Journal of Antimicrobial Agents<\/em>. Their claim? Hydroxychloroquine (HCQ) &#8211; a malaria drug &#8211; plus azithromycin (an antibiotic) wipes out COVID-19 in a matter of days. Voil\u00e0, pandemic solved.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The study had only 42 patients (already a red flag), but only 36 made it into the final results. Why? Because 6 were excluded: some got too sick, one died, another left the hospital. In other words: if you tank, you vanish from the dataset. Voil\u00e0, problem solved again.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Controls? Treated patients were at the IHU in Marseille. Controls were\u2026 in another hospital entirely. See the problem? Different place, different care, different everything. It was like comparing Paris Saint-Germain to your cousin\u2019s five-a-side team and calling it \u201ca fair trial.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And the kicker: ethics approval for this study supposedly dated March 6 (Reminder: you are not allowed to do experimental research on human without ethic\u2019s approval). But in this case the study looks like it started even <strong>before<\/strong> then. Unless Raoult invented time travel, or simply someone was a little too eager with the recruitment?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And the paper itself? Submitted on March 16, published only four days later on March 24 \u2013 that\u2019s like going to the moon and back in 5 minutes instead of 6 days \u2013 a never-before-seen timeline.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Rockstar Moment<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some researchers, for example microbiologist Elisabeth Bik, grew quickly suspicious of the paper but none the less the world went wild. Trump tweeted it. Fox News sang its praises. Brazilian politicians ordered HCQ like it was champagne. Sanofi increased its production by 50%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a brief, glorious moment, Marseille was the Mekka of medicine. People pilgrimaged to the IHU, waiting 5 hours to be able to enter. Pharmacies couldn\u2019t keep chloroquine in stock. Patients begged doctors for prescriptions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"413\" src=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2-1024x413.png\" alt=\"\" class=\"wp-image-275\" srcset=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2-1024x413.png 1024w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2-300x121.png 300w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2-768x309.png 768w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2-1536x619.png 1536w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-1-Raoult-2.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><sub><strong>Figure 2:<\/strong> <\/sub><em><sub>The virus transforms people into zombies, kinda. Drawing by Karen.<\/sub> <\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">And Raoult? Having coffee with president Emmanuel Macron in Marseille, and getting a seat in the scientific council of the French government. Then his image started to crackle. He doubled down with his now-famous line: <em>\u201cI don\u2019t believe in randomized clinical trials.\u201d<\/em> (Link Youtube) Rejecting basic scientific methodology is like a pilot saying, <em>\u201cI don\u2019t believe in wings.\u201d<\/em> Cute philosophy, until the plane starts nosediving.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ethics on Vacation<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As more people poked around the IHU, the story got\u2026 messy. Not only for the infamous HCQ paper, but also past published papers and trials:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fast-tracked or missing ethics approvals<\/strong>: Several theses supervised at the IHU were defended with dubious or non-existent approval. ANSM (the French drug agency) later confirmed irregularities in multiple studies.<\/li>\n\n\n\n<li><strong>Consent forms?<\/strong> Sometimes rushed, sometimes unclear, sometimes absent. Like downloading an app and finding out later you agreed to sell your kidneys.<\/li>\n\n\n\n<li><strong>Retrospective studies dressed up as prospective<\/strong>: Raoult\u2019s team sometimes collected data first, then went ethics-shopping after the fact. It\u2019s like throwing a party, then asking the city for a noise permit when the police show up.<\/li>\n\n\n\n<li><strong>Tuberculosis experiments<\/strong>: Reports revealed \u201cwildcat\u201d trials at the IHU on multi-resistant TB patients, using combinations of antibiotics outside normal protocols. Guess what, regulators were not amused.<\/li>\n\n\n\n<li><strong>ANSM inspections<\/strong>: By 2021 and 2022, French authorities were formally investigating the IHU. Their reports spoke of \u201cserious ethical breaches,\u201d missing authorizations, and even risks to patient safety. When the official regulator uses phrases like \u201cmassive violations,\u201d you know you\u2019re not in the \u201coops, a typo\u201d territory anymore.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In short: science was happening, but the rulebook was sitting somewhere on the beach at Plage de Prado, sipping pastis. <em>C\u2019est Marseille, b\u00e9b\u00e9<\/em>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Despite the on-going criticism, Raoult held on to his theories and continued researching. Over-confidence? Ignorance? Thrill seeking? Who knows.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Criticism started to explode after the publication of a second study in 2021 that implicated \u2026 <em>deep breath<\/em> \u2026 30.000 participants that were routinely treated with HCQ in Marseille! No official protocol, no ethics approval. This is considered the largest \u201cwild\u201d study to date. Regulatory authorities went bonkers.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-1024x1024.png\" alt=\"\" class=\"wp-image-276\" srcset=\"https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-1024x1024.png 1024w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-300x300.png 300w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-150x150.png 150w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-768x768.png 768w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult-1536x1536.png 1536w, https:\/\/experimenthe-blog.com\/wp-content\/uploads\/2026\/05\/Illustration_sans_titre-2-Raoult.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><sup><strong>Figure 3: <\/strong><em>Looking for the ethic&#8217;s committee approval. One dart at a time. Drawing by Karen.<\/em> <\/sup><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Retractions and the Reckoning<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By 2021, the infamous HCQ paper was officially retracted after relentless criticism on PubPeer and watchdogs (thumbs up for Elisabeth Bik). Data inconsistencies, missing patients, magical recovery rates &#8211; pick your favourite problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Other Raoult-linked studies also fell under scrutiny. In total, more than a dozen publications have faced corrections, expressions of concern, or outright retractions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Meanwhile, the French National Ethics Committee issued scathing opinions: the IHU\u2019s work repeatedly failed to meet basic standards of patient protection. ANSM even filed complaints with the justice system. There goes the institute\u2019s reputation down the toilet because of one media-hungry man.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Aftermath<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Did HCQ work? No. Multiple large randomized trials worldwide showed no clinical benefit. Stockpiles gathered dust. Patients who relied on it instead of proven treatments paid the price.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But the damage wasn\u2019t just medical &#8211; it was cultural. Millions in and outside of France believed in a \u201cmiracle cure\u201d because one charismatic professor said so. Politicians weaponized it. Conspiracies flourished.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And all this because a major research institute in Marseille decided that ethics and rigor were optional accessories.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>And Didier Raoult today?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Well, after several investigations of the ANSM and Aix-Marseille University for scientific misconduct, he retired from his IHU director position in 2022. Yes, retired. Then, in 2024, l\u2019Ordre des m\u00e9decins (the guys that make sure that a doctor respects medical ethics) decided to retract his medical licence for two years. Better late, than never, I guess?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Today, Raoult is on the 12<sup>th<\/sup> position of the Reatraction Watch Leaderboard with more than 48 papers retracted to date (<a href=\"https:\/\/retractionwatch.com\/the-retraction-watch-leaderboard\/\">https:\/\/retractionwatch.com\/the-retraction-watch-leaderboard\/<\/a>) (slow clap).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The Takeaway<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ethics approvals aren\u2019t paperwork<\/strong>; they\u2019re the seatbelt of science. Skip them, and patients get hurt.<\/li>\n\n\n\n<li><strong>Randomized trials are boring, but necessary.<\/strong> Otherwise, you\u2019re just doing medical improv.<\/li>\n\n\n\n<li><strong>Peer review isn\u2019t supposed to be 24-hour drive-through.<\/strong> Fast food science gives you fast food results.<\/li>\n\n\n\n<li>And finally: if you pass by the IHU in Marseille, remember &#8211; it\u2019s not just a building. It\u2019s a cautionary tale of how charisma, shortcuts, and a catchy YouTube video can derail global science when we need it most.<\/li>\n<\/ul>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>References<\/strong><\/summary>\n<p class=\"has-small-font-size wp-block-paragraph\">Criticism on initial hydrochloroquine paper: https:\/\/pubpeer.com\/publications\/E09AC9D25125B0AB077971FBA6DD7B#21<\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">\u201cDidier Raoult doesn\u2019t believe in randomized trials\u201d: https:\/\/www.youtube.com\/watch?v=7TI3Re57X2Y<\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.afis.org\/Didier-Raoult-contre-la-methode-scientifique#ref0\">https:\/\/www.afis.org\/Didier-Raoult-contre-la-methode-scientifique#ref0<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/hydroxychloroquine-l-imbroglio-entre-didier-raoult-sanofi-et-l-ansm_2137974.html\">https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/hydroxychloroquine-l-imbroglio-entre-didier-raoult-sanofi-et-l-ansm_2137974.html<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Wild trial on tuberculosis patients: <a href=\"https:\/\/www.mediapart.fr\/journal\/france\/221021\/ihu-de-marseille-les-ravages-d-une-experimentation-sauvage-contre-la-tuberculose\">https:\/\/www.mediapart.fr\/journal\/france\/221021\/ihu-de-marseille-les-ravages-d-une-experimentation-sauvage-contre-la-tuberculose<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Thesis at IHU with doubtful ethics approval: <a href=\"https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/enquete-a-l-ihu-les-petits-arrangements-de-didier-raoult-avec-l-ethique-et-la-loi_2155083.html?cmp_redirect=true\">https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/enquete-a-l-ihu-les-petits-arrangements-de-didier-raoult-avec-l-ethique-et-la-loi_2155083.html?cmp_redirect=true<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Critics on study with 30.000: https:\/\/pubpeer.com\/publications\/458B11A77135BCB66656469E12F540<\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Criticism on preprint paper that includes 30.000 COVID-19 patients: https:\/\/pubpeer.com\/publications\/3543A87E349E2B7081592624198040<\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">ANSM inspection report\u00a0: <a href=\"https:\/\/ansm.sante.fr\/actualites\/inspection-a-lihu-mediterranee-infection-et-a-lap-hm-lansm-saisit-a-nouveau-la-justice-et-engage-des-poursuites-administratives\">https:\/\/ansm.sante.fr\/actualites\/inspection-a-lihu-mediterranee-infection-et-a-lap-hm-lansm-saisit-a-nouveau-la-justice-et-engage-des-poursuites-administratives<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/enquete-a-l-ihu-les-petits-arrangements-de-didier-raoult-avec-l-ethique-et-la-loi_2155083.html?cmp_redirect=true\">https:\/\/www.lexpress.fr\/sciences-sante\/sciences\/enquete-a-l-ihu-les-petits-arrangements-de-didier-raoult-avec-l-ethique-et-la-loi_2155083.html?cmp_redirect=true<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.science.org\/content\/article\/infamous-paper-popularized-unproven-covid-19-treatment-finally-retracted\">https:\/\/www.science.org\/content\/article\/infamous-paper-popularized-unproven-covid-19-treatment-finally-retracted<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.science.org\/content\/article\/failure-every-level-how-science-sleuths-exposed-massive-ethics-violations-famed-french\">https:\/\/www.science.org\/content\/article\/failure-every-level-how-science-sleuths-exposed-massive-ethics-violations-famed-french<\/a><\/p>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>If you live in Marseille, you know the IHU building: shiny glass, palm trees, Mediterranean sun. Looks like a high-tech [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":272,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[67,31],"tags":[],"class_list":["post-271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clinical-research","category-historic-en"],"_links":{"self":[{"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/posts\/271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/comments?post=271"}],"version-history":[{"count":1,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/posts\/271\/revisions"}],"predecessor-version":[{"id":277,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/posts\/271\/revisions\/277"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/media\/272"}],"wp:attachment":[{"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/media?parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/categories?post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/experimenthe-blog.com\/index.php\/wp-json\/wp\/v2\/tags?post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}