{"id":190284,"date":"2020-09-25T22:18:31","date_gmt":"2020-09-25T21:18:31","guid":{"rendered":"https:\/\/www.realites.com.tn\/?p=190284"},"modified":"2020-09-25T22:18:31","modified_gmt":"2020-09-25T21:18:31","slug":"le-covid-19-continue-de-muter-et-deviendrait-de-plus-en-plus-contagieux","status":"publish","type":"post","link":"https:\/\/realites.com.tn\/fr\/le-covid-19-continue-de-muter-et-deviendrait-de-plus-en-plus-contagieux\/","title":{"rendered":"Le Covid-19 continue de muter et deviendrait de plus en plus contagieux"},"content":{"rendered":"<div>Selon une \u00e9tude de grande envergure men\u00e9e aux \u00c9tats-Unis, le Covid-19 devient probablement de plus en plus contagieux mais cette mutation ne le rendrait pas plus mortel.<\/div>\n<div>Les scientifiques de Houston ont publi\u00e9 mercredi une \u00e9tude avec plus de 5 000 s\u00e9quences g\u00e9n\u00e9tiques du SARS-CoV-2 qui r\u00e9v\u00e8le que le virus a continu\u00e9 \u00e0 muter tout au long de sa propagation au sein de la population. Si ce rapport n\u2019a pas d\u00e9montr\u00e9 que le virus \u00e9tait devenu plus mortel, les experts en sant\u00e9 publique ont d\u00e9montr\u00e9 qu\u2019il \u00e9tait en revanche plus facile \u00e0 attraper, comme le rapporte le Washington Post.<\/div>\n<div>Cette \u00e9tude, au m\u00eame titre qu\u2019une pr\u00e9c\u00e9dente \u00e9tude publi\u00e9e par des scientifiques au Royaume-Uni, a conclu qu\u2019une mutation a modifi\u00e9 la structure de la \u201cprot\u00e9ine de pointe\u201d \u00e0 la surface du virus. La prot\u00e9ine des pointe est la structure qui permet au virus d\u2019entrer dans les cellules humaines. Cette mutation, qui affecte la prot\u00e9ine de pointe, a chang\u00e9 l\u2019acide amin\u00e9 614 \u201cD\u201d (acide aspartique) en \u201cG\u201d (glycine). Un petit changement qui provoquerait une propagation d\u00e9mesur\u00e9e du virus.<\/div>\n<div><\/div>\n<div><strong>*Les gestes barri\u00e8res de moins en moins efficaces ?<\/strong><\/div>\n<div>David Morens, virologue \u00e0 l&rsquo;Institut national des allergies et des maladies infectieuses, a pass\u00e9 en revue le rapport et a indiqu\u00e9 que bien qu\u2019il ne faille pas tirer de conclusions trop rapides de cette \u00e9tude, il est probable que le virus ait r\u00e9agi aux mesures qui ont \u00e9t\u00e9 prises telles que le port du masque ou la distanciation sociale. \u201cPorter des masques, se laver les mains&#8230; toutes ces choses sont des barri\u00e8res \u00e0 la transmissibilit\u00e9 du virus, mais plus le virus devient contagieux, plus il a de chance de contourner ces barri\u00e8res.\u201d<\/div>\n<div>Le virologue explique que cela pourrait signifier que le virus pourrait continuer \u00e0 muter m\u00eame apr\u00e8s qu\u2019un vaccin soit disponible. Au fur et \u00e0 mesure que les gens acquiert une immunit\u00e9, que \u00e7a soit par vaccin ou par infection, le virus pourrait \u00eatre soumis \u00e0 une pression s\u00e9lective pour \u00e9chapper \u00e0 la r\u00e9ponse immunitaire d\u00e9velopp\u00e9e par l\u2019humain. \u201cIl est tout \u00e0 fait possible que lorsque notre immunit\u00e9 au niveau de la population deviendra suffisamment \u00e9lev\u00e9e, ce coronavirus trouvera un moyen de contourner notre immunit\u00e9\u201d, explique David Morens. Tout comme le vaccin contre la grippe, il est probable que le vaccin contre le Covid-19 doive r\u00e9guli\u00e8rement \u00eatre modifi\u00e9.<\/div>\n<div style=\"text-align: right\">(Yahoo Actualit\u00e9s)<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Selon une \u00e9tude de grande envergure men\u00e9e aux \u00c9tats-Unis, le Covid-19 devient probablement de plus en plus contagieux mais cette mutation ne le rendrait pas plus mortel. Les scientifiques de&hellip;<\/p>\n","protected":false},"author":60,"featured_media":190285,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2515],"tags":[],"class_list":["post-190284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le Covid-19 continue de muter et deviendrait de plus en plus contagieux - R\u00e9alit\u00e9s Magazine<\/title>\n<meta name=\"description\" content=\"Selon une \u00e9tude de grande envergure men\u00e9e aux \u00c9tats-Unis, le Covid-19 devient probablement de plus en plus contagieux mais cette mutation ne le rendrait\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/realites.com.tn\/fr\/le-covid-19-continue-de-muter-et-deviendrait-de-plus-en-plus-contagieux\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le Covid-19 continue de muter et deviendrait de plus en plus contagieux - 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