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{"id":115049,"date":"2022-01-15T14:22:14","date_gmt":"2022-01-15T13:22:14","guid":{"rendered":"https:\/\/vosgesinfo.fr\/epinalinfo\/2022\/01\/vaccin-fonctionne-nouveau-vaccin-de-novavax-2\/"},"modified":"2022-01-15T14:22:14","modified_gmt":"2022-01-15T13:22:14","slug":"vaccin-fonctionne-nouveau-vaccin-de-novavax-2","status":"publish","type":"post","link":"https:\/\/vi.si-developpement.fr\/epinalinfo\/2022\/01\/vaccin-fonctionne-nouveau-vaccin-de-novavax-2\/","title":{"rendered":"Vaccin – Comment fonctionne le nouveau vaccin de Novavax ?"},"content":{"rendered":"

\"vaccination\"<\/a><\/p>\n

5e vaccin disponible sur le march\u00e9 et approuv\u00e9 par l’HAS (Haute Autorit\u00e9 de Sant\u00e9), le Nuvaxovid du laboratoire Novavax apporte une alternative vaccinale aux personnes r\u00e9ticentes \u00e0 la vaccination par ARNm. Mais comment fonctionne ce nouveau venu dans l’arsenal de la pr\u00e9vention anti-Covid-19 ?<\/strong><\/p>\n

Nuvaxovid est un vaccin qui repose sur une technologie dite \u00ab\u00a0classique\u00a0\u00bb. Elle est en tout point similaire \u00e0 ce qu’on connaissait d\u00e9j\u00e0 depuis longue date concernant les vaccins historiques. Le principe consiste en l’injection d’une prot\u00e9ine de surface du virus \u00e0 combattre, en l’occurrence le SARS-CoV-2 responsable de la Covid-19, associ\u00e9e \u00e0 un adjuvant.<\/p>\n

Une m\u00eame cible : l’immunit\u00e9 contre la\u00a0prot\u00e9ine Spike<\/h2>\n

Dans le cas du vaccin de la firme Novavax, la prot\u00e9ine recombinante inject\u00e9e est la fameuse Spike,\u00a0sorte de cl\u00e9 permettant habituellement au virus de la Covid-19 de rentrer dans la cellule humaine pour l’infecter. Apr\u00e8s l’injection, le syst\u00e8me immunitaire de l’individu s’immunise contre cette prot\u00e9ine sp\u00e9cifique. Il en r\u00e9sulte une immunit\u00e9 humorale, avec la production d’anticorps neutralisants, mais aussi une immunit\u00e9 cellulaire m\u00e9moire. Retrouvez sa composition exacte sur MesVaccins.net<\/a>.<\/p>\n

Une efficacit\u00e9 qui semble encore \u00e0 confirmer<\/h2>\n

Si les donn\u00e9es sugg\u00e8rent une efficacit\u00e9 de 90% contre les formes symptomatiques de la Covid-19, la HAS<\/a>\u00a0(Haute Autorit\u00e9 de Sant\u00e9) rappelle que les efficacit\u00e9s \u00e0 long terme, contre la transmission, et contre les nouveaux variants Delta et Omicron restent \u00e0 confirmer.<\/p>\n

L’agence rappelle qu’il est pr\u00e9f\u00e9rable d’opter pour pour les vaccins \u00e0 ARNm (des laboratoires Pfizer et Moderna) dont l’efficacit\u00e9 est mieux connue et demeurent les r\u00e9f\u00e9rences dans la lutte contre la Covid-19. Elle consid\u00e8re cependant cette alternative int\u00e9ressante pour les personnes n’ayant encore re\u00e7u aucun injection vaccinale.<\/p>\n

Nouveau\u00a0vaccin de Novavax : un sch\u00e9ma vaccinal simple<\/h2>\n

Seuls les adultes peuvent avoir acc\u00e8s \u00e0 ce nouveau vaccin. Le sch\u00e9ma vaccinal est simple :\u00a0la premi\u00e8re injection\u00a0est suivie d’une deuxi\u00e8me 3 semaines plus tard. Sa tol\u00e9rance, encore \u00e0 confirmer \u00e0 tr\u00e8s grande \u00e9chelle, semble similaire aux autres vaccins disponibles sur le march\u00e9.<\/p>\n

C.K.N.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

5e vaccin disponible sur le march\u00e9 et approuv\u00e9 par l’HAS (Haute Autorit\u00e9 de Sant\u00e9), le Nuvaxovid du laboratoire Novavax apporte […]<\/p>\n","protected":false},"author":52,"featured_media":1555,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,5],"tags":[1752,499,1753,1754,1755,1678,1756,505,648],"acf":[],"yoast_head":"\nVaccin - Comment fonctionne le nouveau vaccin de Novavax ? - Epinal Info<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vaccin - Comment fonctionne le nouveau vaccin de Novavax ? - Epinal Info\" \/>\n<meta property=\"og:description\" content=\"5e vaccin disponible sur le march\u00e9 et approuv\u00e9 par l’HAS (Haute Autorit\u00e9 de Sant\u00e9), le Nuvaxovid du laboratoire Novavax apporte […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vi.si-developpement.fr\/epinalinfo\/2022\/01\/vaccin-fonctionne-nouveau-vaccin-de-novavax-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Epinal Info\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-15T13:22:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vi.si-developpement.fr\/app\/uploads\/sites\/3\/2016\/12\/vaccination.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"C.K.\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"C.K.\" \/>\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:\/\/vi.si-developpement.fr\/epinalinfo\/2022\/01\/vaccin-fonctionne-nouveau-vaccin-de-novavax-2\/\",\"url\":\"https:\/\/vi.si-developpement.fr\/epinalinfo\/2022\/01\/vaccin-fonctionne-nouveau-vaccin-de-novavax-2\/\",\"name\":\"Vaccin - Comment fonctionne le nouveau vaccin de Novavax ? 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