{"id":14407,"date":"2022-09-26T11:58:41","date_gmt":"2022-09-26T09:58:41","guid":{"rendered":"https:\/\/congopubonline.com\/?p=14407"},"modified":"2022-09-27T17:17:36","modified_gmt":"2022-09-27T15:17:36","slug":"levolution-nen-a-pas-fini-avec-omicron","status":"publish","type":"post","link":"https:\/\/congopubonline.com\/?p=14407","title":{"rendered":"L’\u00e9volution n’en a pas fini avec Omicron"},"content":{"rendered":"\n

Apr\u00e8s le variant Omicron, devons-nous craindre la lettre suivante de l’alphabet grec, soit un variant Pi ? Ce n’est pas si s\u00fbr: il semble qu’Omicron ait encore un bon potentiel de mutations en r\u00e9serve, ce qui pourrait nous r\u00e9server des surprises cet\u00a0hiver.<\/strong><\/p>\n\n\n\n

La raison est que les mutations qui ont conduit \u00e0 Omicron\u00a0ont\u00a0rendu\u00a0ce variant particuli\u00e8rement efficace, par rapport aux Alpha,\u00a0Beta\u00a0et autres qui l’ont pr\u00e9c\u00e9d\u00e9. Plus de 50 mutations qui lui ont permis d’entrer dans nos cellules par d’autres chemins ou d’infecter des gens qui avaient \u00e9t\u00e9 vaccin\u00e9s ou d\u00e9j\u00e0 infect\u00e9s. Tellement efficace en fait, qu’il a rapidement surclass\u00e9 les autres variants, qui sont aujourd’hui pour ainsi dire disparus.<\/p>\n\n\n\n

C’est presque une nouvelle\u00a0esp\u00e8ce,\u00a0commente dans le\u00a0New York Times<\/em>\u00a0le virologue Darren Martin, de l’Universit\u00e9\u00a0du Cap, en\u00a0Afrique\u00a0du\u00a0Sud. \u00ab\u00a0Les innovations g\u00e9n\u00e9tiques vues dans Omicron \u00e9taient beaucoup plus profondes, comme si c’\u00e9tait une nouvelle esp\u00e8ce plut\u00f4t qu’une nouvelle souche.\u00a0\u00bb<\/p>\n\n\n\n

Comme le fait remarquer le\u00a0journaliste\u00a0Carl Zimmer dans ce reportage, entre le moment o\u00f9 l’Organisation\u00a0mondiale de la\u00a0sant\u00e9 avait assign\u00e9 des lettres\u00a0grecques aux variants et celui o\u00f9 Omicron \u00e9tait devenu le 13e variant de la liste, moins d’un an s’\u00e9tait \u00e9coul\u00e9. Or,\u00a0depuis l’arriv\u00e9e d’Omicron\u00a0en novembre 2021, on n’est toujours pas\u00a0pass\u00e9\u00a0\u00e0 la lettre suivante.<\/p>\n\n\n\n

Ce n’est pourtant pas comme si le coronavirus avait cess\u00e9 d’\u00e9voluer. On a plut\u00f4t vu se succ\u00e9der les sous-variants aux noms de code obscurs, comme B.1.1.529. Ce qui aurait pu n’\u00eatre qu’une \u00e9volution normale d’un\u00a0virus\u00a0qui cherche \u00e0 s’adapter \u00e0 nos d\u00e9fenses, semble plut\u00f4t r\u00e9v\u00e9ler un variant qui a une\u00a0capacit\u00e9 sup\u00e9rieure \u00e0 \u00e9voluer\u00a0par rapport \u00e0 ses pr\u00e9d\u00e9cesseurs.<\/p>\n\n\n\n

La derni\u00e8re mauvaise nouvelle sur ce front s’appelle BA.2.75.2: dans une\u00a0<\/a>recherche\u00a0pr\u00e9-publi\u00e9e -donc, qui n’a pas encore \u00e9t\u00e9 r\u00e9vis\u00e9e- le 19 septembre, une \u00e9quipe sous la direction de l’Institut Karolinska, en Su\u00e8de, d\u00e9crit ce sous-variant comme \u00e9tant -dans des tests sur des cellules- meilleur que les autres pour \u00e9chapper aux traitements \u00e0 base d’anticorps monoclonaux. Il n’a \u00e9t\u00e9 identifi\u00e9\u00a0qu’en ao\u00fbt, et il repr\u00e9sente moins de 1% des infections. Mais il a des atouts pour surclasser les autres.<\/p>\n\n\n\n

Et m\u00eame si ce n’est pas lui qui le fait, rien dans l’histoire d’Omicron depuis 10\u00a0mois\u00a0ne permet de croire que BA.2.75.2 \u00ab\u00a0sera la fin de la ligne \u00e9volutive\u00a0\u00bb,\u00a0r\u00e9sume Carl Zimmer. \u00ab\u00a0Je ne pense pas qu’il va frapper un\u00a0mur\u00a0dans l’espace des mutations\u00a0\u00bb, rench\u00e9rit un des co-auteurs de l’\u00e9tude de l’Institut\u00a0Karolinska.<\/p>\n\n\n\n

Techno-Science.net via CONGO PUB Online<\/em><\/strong><\/p>\n

<\/span> 335<\/span> Vues<\/span><\/div>","protected":false},"excerpt":{"rendered":"

Apr\u00e8s le variant Omicron, devons-nous craindre la lettre suivante de l’alphabet grec, soit un variant Pi ? Ce n’est pas si s\u00fbr: il semble qu’Omicron ait encore un bon potentiel…<\/p>\n","protected":false},"author":1,"featured_media":14409,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[60],"tags":[],"class_list":["post-14407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante"],"yoast_head":"\nL'\u00e9volution n'en a pas fini avec Omicron - Congo Pub Online<\/title>\n<meta name=\"description\" content=\"L'\u00e9volution n'en a pas fini avec Omicron\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/congopubonline.com\/?p=14407\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'\u00e9volution n'en a pas fini avec Omicron\" \/>\n<meta property=\"og:description\" content=\"L'\u00e9volution n'en a pas fini avec Omicron\" \/>\n<meta property=\"og:url\" content=\"https:\/\/congopubonline.com\/?p=14407\" \/>\n<meta property=\"og:site_name\" content=\"Congo Pub Online\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/web.facebook.com\/Congopubonline\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-26T09:58:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-27T15:17:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/congopubonline.com\/wp-content\/uploads\/2022\/09\/coronavirus-genetique-itok-Zkud-g6W.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"admin9775\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CONGOPUBOnline\" \/>\n<meta name=\"twitter:site\" content=\"@CONGOPUBOnline\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin9775\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/congopubonline.com\/?p=14407#article\",\"isPartOf\":{\"@id\":\"https:\/\/congopubonline.com\/?p=14407\"},\"author\":{\"name\":\"admin9775\",\"@id\":\"https:\/\/congopubonline.com\/#\/schema\/person\/d2f3a940be2e9c1a0e4f8831e203f3cc\"},\"headline\":\"L’\u00e9volution n’en a pas fini avec Omicron\",\"datePublished\":\"2022-09-26T09:58:41+00:00\",\"dateModified\":\"2022-09-27T15:17:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/congopubonline.com\/?p=14407\"},\"wordCount\":488,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/congopubonline.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/congopubonline.com\/?p=14407#primaryimage\"},\"thumbnailUrl\":\"https:\/\/congopubonline.com\/wp-content\/uploads\/2022\/09\/coronavirus-genetique-itok-Zkud-g6W.webp\",\"articleSection\":[\"Sant\u00e9\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/congopubonline.com\/?p=14407#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/congopubonline.com\/?p=14407\",\"url\":\"https:\/\/congopubonline.com\/?p=14407\",\"name\":\"L'\u00e9volution n'en a pas fini avec Omicron - 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