{"id":221946,"date":"2021-10-21T21:37:28","date_gmt":"2021-10-21T20:37:28","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=221946"},"modified":"2021-10-21T21:37:28","modified_gmt":"2021-10-21T20:37:28","slug":"covid-19-la-3e-dose-du-vaccin-pfizer-biontech-jugee-efficace-a-956","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/covid-19-la-3e-dose-du-vaccin-pfizer-biontech-jugee-efficace-a-956\/","title":{"rendered":"Covid-19 : la 3e dose du vaccin Pfizer-BioNTech jug\u00e9e efficace \u00e0 95,6 %"},"content":{"rendered":"<div>\n<div>Une dose de rappel du vaccin contre le Covid-19 d\u00e9velopp\u00e9 par l&rsquo;alliance Pfizer-BioNTech est efficace \u00e0 95,6 % contre les formes symptomatiques de la maladie, selon une \u00e9tude r\u00e9alis\u00e9e par les deux laboratoires publi\u00e9e ce jeudi 21 octobre.<\/div>\n<div>L&rsquo;essai clinique de phase 3, r\u00e9alis\u00e9 sur \u00ab 10 000 personnes de plus de 16 ans \u00bb, dont l&rsquo;\u00e2ge m\u00e9dian des participants se situait autour de 53 ans, montre en effet \u00ab une efficacit\u00e9 relative de 95,6 % \u00bb et \u00ab un profil de s\u00fbret\u00e9 favorable \u00bb, selon un communiqu\u00e9. \u00ab Il s&rsquo;agit des premiers r\u00e9sultats d&rsquo;efficacit\u00e9 d&rsquo;un essai randomis\u00e9 pour un rappel du vaccin contre le Covid-19 \u00bb, ont pr\u00e9cis\u00e9 les deux entreprises.<\/div>\n<div>\u00ab Ces r\u00e9sultats d\u00e9montrent une fois de plus l&rsquo;utilit\u00e9 des rappels dans nos efforts pour prot\u00e9ger la population contre cette maladie \u00bb, s&rsquo;est f\u00e9licit\u00e9 Albert Bourla, directeur g\u00e9n\u00e9ral de Pfizer, cit\u00e9 dans le communiqu\u00e9. Aussi, ces r\u00e9sultats seront soumis aux autorit\u00e9s de r\u00e9gulation \u00ab d\u00e8s que possible \u00bb. Cette \u00e9tude a \u00e9t\u00e9 r\u00e9alis\u00e9e alors m\u00eame que \u00ab le variant Delta \u00e9tait la principale souche \u00bb circulant durant cette p\u00e9riode.<\/div>\n<div><\/div>\n<div><strong>*Autoris\u00e9 aux Etats-Unis depuis septembre 2021<\/strong><\/div>\n<div>Plusieurs pays ont d\u00e9j\u00e0 autoris\u00e9 l&rsquo;administration d&rsquo;une dose de rappel contre le coronavirus pour stimuler l&rsquo;immunit\u00e9 des personnes vaccin\u00e9es, qui semble baisser apr\u00e8s plusieurs mois, d&rsquo;apr\u00e8s d&rsquo;autres \u00e9tudes. Aux \u00c9tats-Unis, par exemple, les experts de l&rsquo;Agence am\u00e9ricaine du m\u00e9dicament (FDA) pr\u00e9conisent depuis fin septembre dernier une troisi\u00e8me dose de Pfizer-BioNtech pour certaines populations \u00e0 risque, comme les plus de 65 ans. \u00ab Les donn\u00e9es disponibles sugg\u00e8rent une immunit\u00e9 en baisse chez certaines populations enti\u00e8rement vaccin\u00e9es \u00bb, a r\u00e9cemment r\u00e9it\u00e9r\u00e9 la cheffe par int\u00e9rim de la FDA, Janet Woodcock.<\/div>\n<div>En Europe, l&rsquo;Agence des m\u00e9dicaments (EMA) a, elle, approuv\u00e9 plus largement le principe d&rsquo;une troisi\u00e8me dose de Pfizer-BioNtech pour les plus de 18 ans d\u00e9but octobre seulement, laissant aux \u00c9tats membres de l&rsquo;Union europ\u00e9enne (UE) le choix plus pr\u00e9cis des populations \u00e9ligibles. La France a ainsi commenc\u00e9 \u00e0 administrer cette dose de rappel \u00e0 certaines cat\u00e9gories de population : les plus \u00e2g\u00e9s (six mois apr\u00e8s leur vaccination) et les personnes au syst\u00e8me immunitaire affaibli.<\/div>\n<div>Toutefois, le sujet de la troisi\u00e8me dose a raviv\u00e9 la question des in\u00e9galit\u00e9s entre les pays riches et les pays pauvres. Alors que deux doses prot\u00e8gent efficacement contre les formes graves de la maladie, l&rsquo;acc\u00e8s \u00e0 la premi\u00e8re dose de vaccin reste encore tr\u00e8s limit\u00e9 dans certaines r\u00e9gions du monde, notamment en Afrique.<\/div>\n<div style=\"text-align: right\">(AFP)<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Une dose de rappel du vaccin contre le Covid-19 d\u00e9velopp\u00e9 par l&rsquo;alliance Pfizer-BioNTech est efficace \u00e0 95,6 % contre les formes symptomatiques de la maladie, selon une \u00e9tude r\u00e9alis\u00e9e par&hellip;<\/p>\n","protected":false},"author":60,"featured_media":221947,"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-221946","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 - 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