{"id":225349,"date":"2021-12-10T23:31:15","date_gmt":"2021-12-10T22:31:15","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=225349"},"modified":"2021-12-10T23:31:15","modified_gmt":"2021-12-10T22:31:15","slug":"vaccin-contre-le-covid-vers-une-dose-de-rappel-tous-les-6-mois","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/vaccin-contre-le-covid-vers-une-dose-de-rappel-tous-les-6-mois\/","title":{"rendered":"Vaccin contre le Covid: vers une dose de rappel tous les 6 mois?"},"content":{"rendered":"<div>Combien de doses de vaccin seront encore n\u00e9cessaires pour endiguer l\u2019\u00e9pid\u00e9mie de Covid-19? Personne ne peut le pr\u00e9voir. Mais la convergence de certaines conditions peut n\u00e9anmoins sugg\u00e9rer l\u2019annulation des rappels tous les 6 mois.<\/div>\n<div>Face au rebond \u00e9pid\u00e9mique, l\u2019ex\u00e9cutif fran\u00e7ais a renforc\u00e9 et affin\u00e9 sa strat\u00e9gie contre la cinqui\u00e8me vague \u201cfulgurante\u201d de coronavirus. Parmi les annonces du ministre de la Sant\u00e9 Olivier V\u00e9ran, le 25 novembre: l\u2019\u00e9largissement du rappel \u201d\u00e0 tous les adultes d\u00e8s 5 mois apr\u00e8s leur derni\u00e8re injection\u201d.<\/div>\n<div>On sait maintenant que l\u2019efficacit\u00e9 du vaccin contre l\u2019infection baisse avec le temps, notamment six mois apr\u00e8s la vaccination. La protection contre les formes graves de Covid-19 reste \u00e9lev\u00e9e, mais semble tout de m\u00eame diminuer, notamment chez les personnes \u00e2g\u00e9es.<\/div>\n<div>L\u2019efficacit\u00e9 des vaccins et de la troisi\u00e8me dose se voit facilement si l\u2019on analyse le nombre de personnes vaccin\u00e9es ou non-vaccin\u00e9es positives, hospitalis\u00e9es ou en r\u00e9animation.<\/div>\n<div><\/div>\n<div><strong>*Dose de rappel, jusqu\u2019o\u00f9 ira-t-on ?<\/strong><\/div>\n<div>Si l\u2019efficacit\u00e9 du rappel vaccinal est largement d\u00e9montr\u00e9e, quelle sera sa fr\u00e9quence d\u2019administration dans le futur ? En ce qui concerne les prochains mois, nous pourrions \u00eatre \u00e9pargn\u00e9s de l\u2019injection d\u2019une quatri\u00e8me dose. Encore faut-il que la situation y soit favorable.<\/div>\n<div>Tout d\u2019abord, une diminution de la circulation du virus, comme ce qu\u2019on a pu conna\u00eetre au cours de l\u2019\u00e9t\u00e9 2021, et avec elle une rar\u00e9faction des cas graves seraient un (tr\u00e8s) bon d\u00e9but pour fermer la porte \u00e0 la n\u00e9cessit\u00e9 d\u2019une nouvelle dose.<\/div>\n<div>Ensuite, il est \u00e9tabli que le Sars-Cov2 mute, comme tous les virus, tr\u00e8s r\u00e9guli\u00e8rement. De ces ph\u00e9nom\u00e8nes naissent de nouveaux variants du Covid-19, plus ou moins dangereux, plus ou moins contagieux. Ainsi une autre condition essentielle au soulagement de la fr\u00e9quence du rappel vaccinal, c\u2019est que les prochains variants ne fassent pas brutalement baisser l\u2019efficacit\u00e9 du vaccin, comme Omicron par exemple.<\/div>\n<div>La r\u00e9union de ces conditions rendrait favorable l\u2019id\u00e9e de tirer une croix sur un rappel vaccinal dans les prochains mois. Mais ce n\u2019est pas la promesse qu\u2019il ne faudra pas faire un nouveau vaccin capable de r\u00e9pondre aux variants plus tard&#8230;<\/div>\n<div style=\"text-align: right\">(HuffPost)<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Combien de doses de vaccin seront encore n\u00e9cessaires pour endiguer l\u2019\u00e9pid\u00e9mie de Covid-19? Personne ne peut le pr\u00e9voir. Mais la convergence de certaines conditions peut n\u00e9anmoins sugg\u00e9rer l\u2019annulation des rappels&hellip;<\/p>\n","protected":false},"author":60,"featured_media":225350,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-225349","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-monde"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vaccin contre le Covid: vers une dose de rappel tous les 6 mois? - R\u00e9alit\u00e9s Magazine<\/title>\n<meta name=\"description\" content=\"Combien de doses de vaccin seront encore n\u00e9cessaires pour endiguer l\u2019\u00e9pid\u00e9mie de Covid-19? Personne ne peut le pr\u00e9voir. 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