{"id":218185,"date":"2021-08-31T22:27:01","date_gmt":"2021-08-31T21:27:01","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=218185"},"modified":"2021-08-31T22:27:01","modified_gmt":"2021-08-31T21:27:01","slug":"lafrique-du-sud-detecte-un-nouveau-variant-du-coronavirus","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/lafrique-du-sud-detecte-un-nouveau-variant-du-coronavirus\/","title":{"rendered":"L\u2019Afrique du Sud d\u00e9tecte un nouveau variant du coronavirus"},"content":{"rendered":"<div>Des scientifiques sud-africains surveillent un nouveau variant du coronavirus poss\u00e9dant un taux de mutation inhabituel et dont la fr\u00e9quence a graduellement augment\u00e9 ces derniers mois, a indiqu\u00e9 lundi 30 ao\u00fbt l\u2019Institut national des maladies transmissibles d\u2019Afrique du Sud (NICD).<\/div>\n<div>Que sait-on du nouveau variant C.1.2, surveill\u00e9 par les scientifiques ?<\/div>\n<div>Le variant, connu sous le nom de C.1.2, a \u00e9t\u00e9 signal\u00e9 la semaine pass\u00e9e par la Plateforme de recherche, d\u2019innovation et de s\u00e9quen\u00e7age du KwaZulu-Natal (Krisp) dans une \u00e9tude qui n\u2019a pas encore \u00e9t\u00e9 publi\u00e9e.<\/div>\n<div>Alors que la majorit\u00e9 des infections par le Covid-19 en Afrique du Sud sont actuellement provoqu\u00e9es par le variant Delta \u2013 identifi\u00e9 pour la premi\u00e8re fois en Inde \u2013, C.1.2 a attir\u00e9 l\u2019attention des scientifiques car il mute presque deux fois plus vite que les autres variants d\u00e9j\u00e0 observ\u00e9s.<\/div>\n<div>Jusqu\u2019ici, C.1.2 a \u00e9t\u00e9 d\u00e9tect\u00e9 dans toutes les provinces sud-africaines, ainsi qu\u2019ailleurs dans le monde, notamment en Chine, \u00e0 Maurice, en Nouvelle-Z\u00e9lande et au Royaume-Uni.<\/div>\n<div><\/div>\n<div><strong>*L\u2019OMS l\u2019a-t-elle r\u00e9pertori\u00e9 comme un variant d\u2019int\u00e9r\u00eat ou de pr\u00e9occupation ?<\/strong><\/div>\n<div>Jusqu\u2019\u00e0 pr\u00e9sent, le virus n\u2019a pas rempli les crit\u00e8res de l\u2019OMS car il n\u2019est pas assez fr\u00e9quent pour \u00eatre qualifi\u00e9 de \u00ab variant digne d\u2019int\u00e9r\u00eat \u00bb ou de \u00ab variant inqui\u00e9tant \u00bb, comme le sont les variants Delta et Beta \u2013 apparu en Afrique du Sud en 2020 \u2013, tous deux tr\u00e8s contagieux.<\/div>\n<div>Les scientifiques du NICD assurent lundi que C.1.2 n\u2019est \u00ab pr\u00e9sent qu\u2019\u00e0 de tr\u00e8s faibles niveaux \u00bb et qu\u2019il est trop t\u00f4t pour d\u00e9terminer son \u00e9volution. \u00ab \u00c0 ce stade, nous n\u2019avons pas de donn\u00e9es exp\u00e9rimentales pour confirmer comment il r\u00e9agit, en termes de sensibilit\u00e9 aux anticorps \u00bb, a expliqu\u00e9 Penny Moore, chercheuse au NICD.<\/div>\n<div><\/div>\n<div><strong>*Y a-t-il une chance que ce variant disparaisse ?<\/strong><\/div>\n<div>Oui. Les variants du Covid-19 \u00e9mergent tout le temps et beaucoup d\u2019entre eux disparaissent avant qu\u2019ils ne deviennent un r\u00e9el probl\u00e8me. De nombreux variants de virus sont tr\u00e8s fragiles.<\/div>\n<div><\/div>\n<div><strong>*Savons-nous si les vaccins seront efficaces contre C.1.2 ?<\/strong><\/div>\n<div>Pas encore. L\u2019Institut national des maladies transmissibles continue de surveiller la fr\u00e9quence de C.1.2 et d\u2019examiner son comportement. Des tests pour \u00e9valuer l\u2019impact des mutations qu\u2019il poss\u00e8de sur l\u2019infectiosit\u00e9 et la r\u00e9sistance vaccinale sont toujours en cours. Mais \u00ab nous avons une confiance consid\u00e9rable dans le fait que les vaccins distribu\u00e9s en Afrique du Sud continueront de nous prot\u00e9ger contre les cas graves et la mort \u00bb, a ajout\u00e9 Penny Moore.<\/div>\n<div>L\u2019Afrique du Sud est le pays le plus touch\u00e9 du continent africain, avec 2,7 millions de cas recens\u00e9s jusqu\u2019ici, dont 81 830 ont \u00e9t\u00e9 fatals. Le variant Beta est \u00e0 l\u2019origine d\u2019une deuxi\u00e8me vague de contaminations qui a touch\u00e9 en d\u00e9cembre et janvier le pays, d\u00e9sormais confront\u00e9 \u00e0 une troisi\u00e8me vague, domin\u00e9e par le variant Delta. La campagne de vaccination contre le Covid-19 en Afrique du Sud a commenc\u00e9 lentement, avec seulement 14 % environ de sa population adulte compl\u00e8tement vaccin\u00e9e \u00e0 ce jour.<\/div>\n<div style=\"text-align: right;\">(Le Point, avec AFP)<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Des scientifiques sud-africains surveillent un nouveau variant du coronavirus poss\u00e9dant un taux de mutation inhabituel et dont la fr\u00e9quence a graduellement augment\u00e9 ces derniers mois, a indiqu\u00e9 lundi 30 ao\u00fbt&hellip;<\/p>\n","protected":false},"author":60,"featured_media":218186,"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-218185","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 - 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