{"id":113541,"date":"2024-04-10T01:29:19","date_gmt":"2024-04-10T05:29:19","guid":{"rendered":"https:\/\/www.sitata.com\/?p=113541"},"modified":"2024-04-10T01:29:19","modified_gmt":"2024-04-10T05:29:19","slug":"highly-pathogenic-avian-influenza-h5n1","status":"publish","type":"post","link":"https:\/\/www.sitata.com\/fr\/grippe-aviaire-hautement-pathogene-h5n1\/","title":{"rendered":"Influenza aviaire hautement pathog\u00e8ne - H5N1"},"content":{"rendered":"

Il existe une souche du virus de la grippe appel\u00e9e H5N1 qui est hautement mortelle pour les oiseaux sauvages et les oiseaux d'eau.
les volailles domestiques (poulets, canards, etc.). Elle a provoqu\u00e9 d'importantes \u00e9pid\u00e9mies dans les \u00e9levages de poulets domestiques
au cours des derni\u00e8res d\u00e9cennies. En de rares occasions, ce virus a infect\u00e9 des humains qui \u00e9taient en contact tr\u00e8s \u00e9troit avec le virus de la grippe.
contact avec des poulets infect\u00e9s. Depuis 1997, les infections par le virus HPAI H5N1 ont infect\u00e9
environ 900 personnes dans 22 pays, avec un taux de mortalit\u00e9 de 50%.
Au cours des derni\u00e8res ann\u00e9es, ce virus a infect\u00e9 des esp\u00e8ces de mammif\u00e8res telles que les chats, les chiens, les visons et les renards,
entre autres. Toutefois, au cours de la semaine derni\u00e8re, les m\u00e9dias ont rapport\u00e9 les premi\u00e8res infections de bovins.
de l'influenza aviaire A hautement pathog\u00e8ne (IAHP) H5N1 dans au moins six \u00c9tats. Les vaches ont probablement
ont contract\u00e9 le virus \u00e0 partir d'oiseaux sauvages infect\u00e9s. Il semble qu'il ne provoque qu'une l\u00e9g\u00e8re maladie chez les vaches.<\/p>\n\n\n\n

\"virus<\/figure>\n\n\n\n


Cas humain<\/h2>\n\n\n\n

Le cas d'un ouvrier d'une ferme laiti\u00e8re du Texas qui a \u00e9t\u00e9 test\u00e9 positif au H5N1 apr\u00e8s avoir re\u00e7u une dose d'insuline, est quelque peu pr\u00e9occupant.
exposition \u00e0 des bovins probablement infect\u00e9s. Les sympt\u00f4mes \u00e9taient l\u00e9gers et le patient se r\u00e9tablit.
La question est de savoir si le virus a mut\u00e9 pour \u00eatre capable d'infecter et de se propager parmi les personnes infect\u00e9es.
humains de provoquer une nouvelle pand\u00e9mie. Pour r\u00e9pondre \u00e0 cette question, le CDC am\u00e9ricain a examin\u00e9 les
s\u00e9quences g\u00e9n\u00e9tiques du virus du Texas. Des diff\u00e9rences mineures ont \u00e9t\u00e9 constat\u00e9es entre le sp\u00e9cimen humain et le virus du Texas.
et ceux pr\u00e9lev\u00e9s sur des bovins, mais tous deux conservent des caract\u00e9ristiques g\u00e9n\u00e9tiques essentiellement aviaires.
Dans l'ensemble, cet \u00e9chantillon ne pr\u00e9sente pas de changements qui rendraient le virus mieux adapt\u00e9 \u00e0 l'infection des mammif\u00e8res.<\/p>\n\n\n\n


R\u00e9sum\u00e9<\/h2>\n\n\n\n

Sur la base de ces premi\u00e8res \u00e9tudes, les CDC am\u00e9ricains consid\u00e8rent que l'\u00e9valuation des risques pour la population en g\u00e9n\u00e9ral est suffisante.
reste faible. Cependant, les personnes qui ont \u00e9t\u00e9 expos\u00e9es de pr\u00e8s ou de fa\u00e7on prolong\u00e9e \u00e0 des
d'oiseaux ou d'autres animaux, y compris le b\u00e9tail, ou \u00e0 des environnements contamin\u00e9s par des oiseaux ou des animaux infect\u00e9s.
sont plus expos\u00e9s au risque d'infection. N\u00e9anmoins, le lait pasteuris\u00e9 peut \u00eatre consomm\u00e9 en toute s\u00e9curit\u00e9, m\u00eame si
le lait cru doit \u00eatre \u00e9vit\u00e9.
\u00c9tant donn\u00e9 l'absence de mutations ou d'autres signes qui favoriseraient la transmission \u00e0 l'homme, l'hypoth\u00e8se d'une transmission \u00e0 l'homme n'a pas \u00e9t\u00e9 retenue.
le risque d'exposition pour le voyageur en g\u00e9n\u00e9ral est nul. Toutefois, seuls le temps et une surveillance attentive
Le rapport de la Commission europ\u00e9enne prouve que le cas du Texas n'est qu'un \u00e9v\u00e9nement isol\u00e9. Mais je crains que la souche H5N1 qui
existe depuis des d\u00e9cennies dans le monde entier pourrait \u00eatre en train de muter pour s'adapter \u00e0 l'homme.<\/p>","protected":false},"excerpt":{"rendered":"

Il existe une souche du virus de la grippe appel\u00e9e H5N1 qui est hautement mortelle pour les oiseaux sauvages et les volailles domestiques (poulets, canards, etc.). Ce virus a provoqu\u00e9 d'importantes \u00e9pid\u00e9mies dans les \u00e9levages de poulets domestiques au cours des derni\u00e8res d\u00e9cennies. En de rares occasions, ce virus a infect\u00e9 des humains qui avaient \u00e9t\u00e9 en contact tr\u00e8s \u00e9troit avec des poulets infect\u00e9s. Depuis 1997, les infections par le virus IAHP H5N1 [...]<\/p>","protected":false},"author":2,"featured_media":113543,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[155,20],"tags":[456,579,112,457],"yoast_head":"\nHighly Pathogenic Avian Influenza - H5N1<\/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:\/\/www.sitata.com\/fr\/grippe-aviaire-hautement-pathogene-h5n1\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Highly Pathogenic Avian Influenza - H5N1\" \/>\n<meta property=\"og:description\" content=\"There is a strain of the influenza virus called H5N1 that is highly lethal for wild birds anddomestic fowl (chickens, ducks, etc.). 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