{"id":216516,"date":"2021-08-05T09:37:20","date_gmt":"2021-08-05T08:37:20","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=216516"},"modified":"2021-08-05T09:37:20","modified_gmt":"2021-08-05T08:37:20","slug":"lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/","title":{"rendered":"L&rsquo;efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois"},"content":{"rendered":"<div>L&rsquo;efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic d&rsquo;efficacit\u00e9 (96 %) est atteint deux mois apr\u00e8s la deuxi\u00e8me dose, et l&rsquo;effet d\u00e9cline ensuite progressivement. Men\u00e9e chez 45.000 patients vaccin\u00e9s avec deux doses dans six pays, cette \u00e9tude montre une baisse graduelle de l&rsquo;efficacit\u00e9 de 6 % environ tous les deux mois, indiquent les auteurs. M\u00eame s&rsquo;ils se gardent bien d&rsquo;extrapoler sur une prolongation de cette courbe, cela signifie que le seuil des 50 % serait franchi au bout de 18 mois.<\/div>\n<div>\u00ab Les donn\u00e9es indiquent une diminution de l&rsquo;efficacit\u00e9, qui est au d\u00e9part \u00e0 quasiment 100 % contre le risque d&rsquo;hospitalisation. Apr\u00e8s une p\u00e9riode de six mois, l&rsquo;efficacit\u00e9 devient faible chez les personnes \u00e2g\u00e9es de plus de 90 ans et moyenne chez les plus de 80 ans, confirme Albert Bourla, le P.-D.G. de Pfizer sur CNBC. La bonne nouvelle, c&rsquo;est que nous pensons qu&rsquo;une troisi\u00e8me dose pourra faire revenir le niveau d&rsquo;immunit\u00e9 \u00e0 un niveau suffisant pour prot\u00e9ger contre le variant Delta. \u00bb Un r\u00e9sultat qui arrange donc bien les affaires du laboratoire.<\/div>\n<div>En juin, une \u00e9tude sur le vaccin Moderna indiquait que la demi-vie des anticorps neutralisants est de 109 jours (ce qui signifie qu&rsquo;il ne reste plus que la moiti\u00e9 des anticorps apr\u00e8s ce d\u00e9lai), le niveau global restant toutefois largement satisfaisant m\u00eame apr\u00e8s 209 jours. De plus, le d\u00e9clin semble ralentir au fil du temps, ce qui sugg\u00e8re qu&rsquo;on atteint un plafond au bout d&rsquo;un moment. Plusieurs autres \u00e9tudes sugg\u00e8rent que l&rsquo;immunit\u00e9 pourrait m\u00eame durer plusieurs ann\u00e9es, voire plusieurs dizaines d&rsquo;ann\u00e9es. Bref, il est bien trop t\u00f4t pour tirer des conclusions h\u00e2tives sur la n\u00e9cessit\u00e9 d\u2019une troisi\u00e8me dose.<\/div>\n<div style=\"text-align: right\">(Futura)<\/div>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic d&rsquo;efficacit\u00e9 (96 %)&hellip;<\/p>\n","protected":false},"author":60,"featured_media":216517,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2515],"tags":[],"class_list":["post-216516","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L&#039;efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine<\/title>\n<meta name=\"description\" content=\"L&#039;efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine\" \/>\n<meta property=\"og:description\" content=\"L&#039;efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic\" \/>\n<meta property=\"og:url\" content=\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/\" \/>\n<meta property=\"og:site_name\" content=\"R\u00e9alit\u00e9s Magazine\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/realites.tn\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-05T08:37:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"750\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"La R\u00e9daction\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"La R\u00e9daction\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/\",\"url\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/\",\"name\":\"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine\",\"isPartOf\":{\"@id\":\"https:\/\/realites.com.tn\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg\",\"datePublished\":\"2021-08-05T08:37:20+00:00\",\"author\":{\"@id\":\"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/438b71c29a257d955d96d8aef42336e7\"},\"description\":\"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic\",\"breadcrumb\":{\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage\",\"url\":\"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg\",\"contentUrl\":\"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg\",\"width\":1000,\"height\":750},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/realites.com.tn\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"L&rsquo;efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/realites.com.tn\/fr\/#website\",\"url\":\"https:\/\/realites.com.tn\/fr\/\",\"name\":\"R\u00e9alit\u00e9s Magazine\",\"description\":\"Actualit\u00e9s de la Tunisie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/realites.com.tn\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/438b71c29a257d955d96d8aef42336e7\",\"name\":\"La R\u00e9daction\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/fbe9ab25fcc82b6e660ad5648f91eadb?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/fbe9ab25fcc82b6e660ad5648f91eadb?s=96&d=mm&r=g\",\"caption\":\"La R\u00e9daction\"},\"url\":\"https:\/\/realites.com.tn\/fr\/author\/realites5201\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine","description":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/","og_locale":"fr_FR","og_type":"article","og_title":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine","og_description":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic","og_url":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/","og_site_name":"R\u00e9alit\u00e9s Magazine","article_publisher":"https:\/\/www.facebook.com\/realites.tn\/","article_published_time":"2021-08-05T08:37:20+00:00","og_image":[{"width":1000,"height":750,"url":"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg","type":"image\/jpeg"}],"author":"La R\u00e9daction","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"La R\u00e9daction","Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/","url":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/","name":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois - R\u00e9alit\u00e9s Magazine","isPartOf":{"@id":"https:\/\/realites.com.tn\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage"},"image":{"@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage"},"thumbnailUrl":"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg","datePublished":"2021-08-05T08:37:20+00:00","author":{"@id":"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/438b71c29a257d955d96d8aef42336e7"},"description":"L'efficacit\u00e9 du vaccin Pfizer\/BioNTech tomberait de 96 % \u00e0 84 % en quatre mois, selon une \u00e9tude (encore non relue) parue sur la plateforme medRxiv. Le pic","breadcrumb":{"@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#primaryimage","url":"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg","contentUrl":"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg","width":1000,"height":750},{"@type":"BreadcrumbList","@id":"https:\/\/realites.com.tn\/fr\/lefficacite-du-vaccin-pfizer-biontech-diminuerait-de-6-tous-les-deux-mois\/amp\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/realites.com.tn\/fr\/"},{"@type":"ListItem","position":2,"name":"L&rsquo;efficacit\u00e9 du vaccin Pfizer\/BioNTech diminuerait de 6 % tous les deux mois"}]},{"@type":"WebSite","@id":"https:\/\/realites.com.tn\/fr\/#website","url":"https:\/\/realites.com.tn\/fr\/","name":"R\u00e9alit\u00e9s Magazine","description":"Actualit\u00e9s de la Tunisie","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/realites.com.tn\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/438b71c29a257d955d96d8aef42336e7","name":"La R\u00e9daction","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/realites.com.tn\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/fbe9ab25fcc82b6e660ad5648f91eadb?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/fbe9ab25fcc82b6e660ad5648f91eadb?s=96&d=mm&r=g","caption":"La R\u00e9daction"},"url":"https:\/\/realites.com.tn\/fr\/author\/realites5201\/"}]}},"jetpack_featured_media_url":"https:\/\/realites.com.tn\/fr\/wp-content\/uploads\/2021\/08\/Vaccin-Pfizer.jpg","jetpack_sharing_enabled":true,"views":18,"_links":{"self":[{"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/posts\/216516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/users\/60"}],"replies":[{"embeddable":true,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/comments?post=216516"}],"version-history":[{"count":0,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/posts\/216516\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/media\/216517"}],"wp:attachment":[{"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/media?parent=216516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/categories?post=216516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/realites.com.tn\/fr\/wp-json\/wp\/v2\/tags?post=216516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}