{"id":676,"date":"2026-03-12T17:26:22","date_gmt":"2026-03-12T16:26:22","guid":{"rendered":"https:\/\/biotechlerncenter.iph-multisite.berta-bewegt.ch\/?page_id=676"},"modified":"2026-03-12T17:26:22","modified_gmt":"2026-03-12T16:26:22","slug":"6-fabrication-du-vaccin","status":"publish","type":"page","link":"https:\/\/biotechlerncenter.interpharma.ch\/fr\/sujets\/juste-un-virus-a-petits-virus-grands-effets\/6-fabrication-du-vaccin\/","title":{"rendered":"6. Fabrication du vaccin"},"content":{"rendered":"\n<p>La fabrication du vaccin contre la grippe est un art exigeant d\u2019une part beaucoup de patience, d\u2019autre part une tr\u00e8s grande prudence car la moindre impuret\u00e9 au cours de la production peut avoir des effets catastrophiques.<\/p>\n\n\n\n<p>En g\u00e9n\u00e9ral, on utilise des \u0153ufs de poule pour fabriquer le vaccin contre la grippe:<\/p>\n\n\n\n<p>a. Des souches virales s\u00e9lectionn\u00e9es sont multipli\u00e9es dans des \u0153ufs embryonn\u00e9s. Ensuite, les virus sont isol\u00e9s, inactiv\u00e9s et transform\u00e9s pour produire le vaccin. Celui-ci ne contient plus de virus actifs.<br>b. Les particules virales sont encore transform\u00e9es et d\u00e9barrass\u00e9es de la plupart de leurs constituants.<br>c. Seuls les deux principaux antig\u00e8nes du virus, HA et NA, sont utilis\u00e9s pour le vaccin. Si n\u00e9cessaire, les vaccins sont produits avec adjonction de substances qui renforcent la r\u00e9ponse immunitaire (adjuvants).<\/p>\n\n\n\n<p>\u00c9tant donn\u00e9 que le virus de la grippe se modifie en permanence, il faut \u00e9laborer chaque ann\u00e9e un nouveau vaccin. Le vaccin contre la grippe saisonni\u00e8re 2012\/2013 agit par exemple contre les souches suivantes:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>A\/Californie\/7\/2009 (H1N1) (\u00abgrippe porcine\u00bb)<\/li><li>A\/Victoria\/361\/2011 (H3N2)<\/li><li>B\/Wisconsin\/1\/2010<\/li><\/ul>\n\n\n\n<p>Ce vaccin saisonnier est donc un vaccin \u00abtypique\u00bb car la grippe saisonni\u00e8re comprend g\u00e9n\u00e9ralement les types H1N1, H3N2 et B.<\/p>\n\n\n\n<p>La fabrication du vaccin contre la grippe \u00e0 l\u2019aide d\u2019\u0153ufs de poule est \u00e9prouv\u00e9e, mais elle pr\u00e9sente des inconv\u00e9nients majeurs, en particulier le facteur temps: la production du vaccin dans des \u0153ufs de poule est complexe et prend beaucoup de temps, du temps que les fabricants n\u2019ont pas en cas de pand\u00e9mie. C\u2019est pourquoi les chercheurs ont \u00e9labor\u00e9 de nouvelles m\u00e9thodes de production.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La fabrication du vaccin contre la grippe est un art exigeant d\u2019une part beaucoup de patience, d\u2019autre part une tr\u00e8s grande prudence car la moindre impuret\u00e9 au cours de la production peut avoir des effets catastrophiques. En g\u00e9n\u00e9ral, on utilise des \u0153ufs de poule pour fabriquer le vaccin contre la grippe: a. Des souches virales [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":686,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"page-templates\/unterthema.php","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-676","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>6. 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