{"id":21749,"date":"2021-07-02T20:19:11","date_gmt":"2021-07-02T20:19:11","guid":{"rendered":"https:\/\/lesvolcansnews.net\/2021\/07\/02\/covid-19-les-variants-qui-circulent-en-afrique\/"},"modified":"2021-07-02T20:23:27","modified_gmt":"2021-07-02T20:23:27","slug":"covid-19-les-variants-qui-circulent-en-afrique","status":"publish","type":"post","link":"https:\/\/lesvolcansnews.net\/?p=21749","title":{"rendered":"covid-19 : Les variants qui circulent en Afrique"},"content":{"rendered":"\n<p><strong><em>Le coronavirus qui provoque le Covid-19 a d\u00e9j\u00e0 beaucoup mut\u00e9 depuis son apparition fin 2019 en Chine. En plus de la source initiale, dite \u00ab sauvage \u00bb qui s\u2019est propag\u00e9e dans le monde entier en 2020, des variants plus contagieux, parfois plus dangereux ou m\u00eame pouvant \u00e9chapper en partie \u00e0 la vaccination, ont vu le jour. L\u2019Organisation mondiale de la sant\u00e9 (OMS) et les \u00c9tats du monde entier suivent donc avec attention l\u2019apparition de ces variants pour pouvoir adapter la riposte face \u00e0 la pand\u00e9mie, a-t-on appris de RFI, capt\u00e9e \u00e0 5H00 \u00e0 Goma.<\/em><\/strong><\/p>\n\n\n\n<p>En Afrique, comme il y a peu de laboratoires \u00e9quip\u00e9s pour le s\u00e9quen\u00e7age du g\u00e9nome, c\u2019est-\u00e0-dire capables de lire le code g\u00e9n\u00e9tique du virus, l\u2019OMS a organis\u00e9 un r\u00e9seau de laboratoires de r\u00e9f\u00e9rence, qui re\u00e7oivent des \u00e9chantillons de tout le continent pour surveiller l\u2019apparition de ces virus mutants. \u00ab Jusqu\u2019\u00e0 pr\u00e9sent, 24 000 \u00e9chantillons ont \u00e9t\u00e9 s\u00e9quenc\u00e9s en Afrique \u00bb, explique la directrice de l\u2019OMS Afrique, le docteur Matshidiso Moeti. \u00ab On sait que ce n\u2019est pas assez et que nous devons rapidement augmenter en cadence \u00bb, \u00e0 cause de la mont\u00e9e en puissance de certains variants, poursuit la source.<\/p>\n\n\n\n<p>D\u2019apr\u00e8s les donn\u00e9es d\u00e9j\u00e0 collect\u00e9es par l\u2019OMS, le variant Alpha, aussi appel\u00e9 variant anglais, est recens\u00e9 dans 32 pays d\u2019Afrique. On le retrouve surtout dans le nord-ouest et la partie centrale du continent. Le variant Beta, apparu en Afrique du Sud, est, lui, pr\u00e9sent dans 27 pays africains. Il est surtout signal\u00e9 dans les pays du Sud. \u00ab Ces deux variants sont plus transmissibles que le virus sauvage \u00bb, explique le docteur Moeti, mais le variant Delta, le variant indien, l\u2019est encore plus selon elle. \u00c0 ce jour, il a \u00e9t\u00e9 recens\u00e9 dans 16 pays africains, pr\u00e9cise RFI.<\/p>\n\n\n\n<p>En Afrique du Sud, alors que le pays traverse une troisi\u00e8me vague de Covid-19 encore plus violente que la pr\u00e9c\u00e9dente, il a pris le pas sur le variant local, le Beta, et est devenu majoritaire. En Ouganda, il repr\u00e9sente d\u00e9sormais 97% des tests effectu\u00e9s et 84% en RDC, mentionne RFI.<\/p>\n\n\n\n<p>\u00ab C\u2019est le variant le plus contagieux \u00e0 ce jour. Il pourrait \u00eatre jusqu\u2019\u00e0 60% plus transmissible que les autres variants, pr\u00e9cise la directrice de l\u2019OMS en Afrique. Les premi\u00e8res observations laissent penser que le variant Delta est li\u00e9 \u00e0 des formes plus graves et plus longues de Covid-19. \u00bb<\/p>\n\n\n\n<p>Variants \u00e9mergeants en Afrique<\/p>\n\n\n\n<p>\u00abUne transmissibilit\u00e9 plus forte, cela veut dire plus de cas, plus d\u2019hospitalisations et un plus grand risque de submerger les syst\u00e8mes de sant\u00e9 \u00bb, rappelle Matshidiso Moeti, cit\u00e9e par RFI.<\/p>\n\n\n\n<p>En plus de ces trois variants consid\u00e9r\u00e9s comme \u00ab pr\u00e9occupants \u00bb par l\u2019OMS, d\u2019autres variants \u00e9mergent sur le continent. Ce sont des variants dits \u00ab d\u2019int\u00e9r\u00eats \u00bb, \u00ab \u00e0 suivre \u00bb, car ils se propagent dans plusieurs pays et peuvent poss\u00e9der les m\u00eames mutations retrouv\u00e9es dans les variants \u00ab pr\u00e9occupants \u00bb. Ils n\u00e9cessitent encore d\u2019\u00eatre \u00e9valu\u00e9s plus en d\u00e9tails.<\/p>\n\n\n\n<p>En premier lieu, le variant Eta, aussi appel\u00e9 variant nig\u00e9rian, m\u00eame si son origine n\u2019est pas clairement prouv\u00e9e. Apparu en d\u00e9cembre 2020, \u00ab il est d\u00e9sormais pr\u00e9sent dans 21 \u00e0 25 pays d\u2019Afrique, et est devenu le troisi\u00e8me variant le plus r\u00e9pandu sur le continent, apr\u00e8s Alpha et Beta \u00bb, d\u00e9taille le docteur Nicksy Gumede-Moeletsi, virologue \u00e0 l\u2019OMS Afrique. \u00ab On commence aussi \u00e0 observer le variant Kappa, une sous-lign\u00e9e du variant indien [variant Delta], observ\u00e9 dans trois pays du continent. Enfin, le variant Epsilon, connu comme le variant californien, a \u00e9t\u00e9 observ\u00e9 dans deux pays d\u2019Afrique \u00bb, diffus\u00e9 par RFI.<\/p>\n\n\n\n<p><br><strong><em>Cizungu Gabriel<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le coronavirus qui provoque le Covid-19 a d\u00e9j\u00e0 beaucoup mut\u00e9 depuis son apparition fin 2019 en Chine. En plus de la source initiale, dite \u00ab sauvage \u00bb qui s\u2019est propag\u00e9e<\/p>\n","protected":false},"author":14,"featured_media":21748,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-21749","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>covid-19 : Les variants qui circulent en Afrique - LES VOLCANS NEWS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lesvolcansnews.net\/?p=21749\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"covid-19 : Les variants qui circulent en Afrique - LES VOLCANS NEWS\" \/>\n<meta property=\"og:description\" content=\"Le coronavirus qui provoque le Covid-19 a d\u00e9j\u00e0 beaucoup mut\u00e9 depuis son apparition fin 2019 en Chine. 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