{"id":69572,"date":"2025-03-22T10:50:20","date_gmt":"2025-03-22T08:50:20","guid":{"rendered":"https:\/\/orheifm.live\/index.php\/2025\/03\/22\/oamenii-de-stiinta-avertizeaza-asupra-mutatiei-virusului-h5n1-continua-sa-arate-noi-trucuri\/"},"modified":"2025-03-22T10:50:20","modified_gmt":"2025-03-22T08:50:20","slug":"oamenii-de-stiinta-avertizeaza-asupra-mutatiei-virusului-h5n1-continua-sa-arate-noi-trucuri","status":"publish","type":"post","link":"https:\/\/orheifm.live\/index.php\/2025\/03\/22\/oamenii-de-stiinta-avertizeaza-asupra-mutatiei-virusului-h5n1-continua-sa-arate-noi-trucuri\/","title":{"rendered":"Oamenii de \u0219tiin\u021b\u0103 avertizeaz\u0103 asupra muta\u021biei virusului H5N1: Continu\u0103 s\u0103 arate noi trucuri"},"content":{"rendered":"<div>\n<p class=\"sc-1evpin9-2 fKFnqL\"><strong>Virusul H5N1, cunoscut sub numele de grip\u0103 aviar\u0103, sufer\u0103 muta\u021bii pentru a se adapta la condi\u021bii noi.<\/strong><\/p>\n<p>Aceast\u0103 evolu\u021bie a permis virusului s\u0103 infecteze nu numai p\u0103s\u0103rile, ci \u0219i mamiferele, inclusiv vacile care dau lapte \u0219i animalele de companie, ceea ce a st\u00e2rnit \u00eengrijorare cu privire la poten\u021bialul s\u0103u impact asupra s\u0103n\u0103t\u0103\u021bii umane, informeaz\u0103 focus.ua cu referire la\u00a0<a href=\"https:\/\/www.theverge.com\/science\/632605\/forever-war-with-bird-flu\" target=\"_blank\" rel=\"nofollow noopener\">theverge.com<\/a>.<\/p>\n<p>Biologul computa\u021bional de la Institutul Na\u021bional de S\u0103n\u0103tate, Martha Nelson, urm\u0103re\u0219te \u00eendeaproape evolu\u021biile de mult timp. Ea observ\u0103 c\u0103 virusul \u201ese adapteaz\u0103 la mamifere \u0219i continu\u0103 s\u0103 arate noi trucuri\u201d.<\/p>\n<p>O preocupare deosebit\u0103 este apari\u021bia genotipului D1.1, o nou\u0103 variant\u0103 a virusului H5N1. Prevalent ini\u021bial la p\u0103s\u0103rile s\u0103lbatice \u0219i la animale, acest genotip a fost detectat recent la vacile de lapte din mai multe state americane, inclusiv Nevada \u0219i Arizona. Aceast\u0103 transmitere \u00eentre specii indic\u0103 o schimbare marcant\u0103 \u00een comportamentul virusului, care infecteaz\u0103 acum mai mult dec\u00e2t gazdele aviare tradi\u021bionale.<\/p>\n<p>Centrele americane pentru controlul \u0219i prevenirea bolilor (CDC) au \u00eenregistrat cazuri umane asociate cu aceast\u0103 epidemie. P\u00e2n\u0103 la 24 februarie 2025, trei persoane din \u021bar\u0103 au fost infectate cu virusul H5N1: un lucr\u0103tor al unei ferme de produse lactate din Nevada, un lucr\u0103tor al unei ferme avicole din Ohio \u0219i un proprietar de p\u0103s\u0103ri din Wyoming.<\/p>\n<p>\u00cen timp ce lucr\u0103torul de la ferma de produse lactate a prezentat simptome u\u0219oare, ceilal\u021bi doi au avut nevoie de spitalizare. Aceste cazuri eviden\u021biaz\u0103 amenin\u021barea poten\u021bial\u0103 a virusului pentru oameni, \u00een special pentru cei care sunt \u00een contact direct cu animalele infectate, au declarat oamenii de \u0219tiin\u021b\u0103.<\/p>\n<p>Capacitatea genotipului D1.1 de a infecta mamiferele a fost asociat\u0103 cu anumite muta\u021bii genetice. \u00cen special, muta\u021bia PB2 D701N a fost identificat\u0103 \u00een probele provenite de la vacile de lapte \u0219i \u00eentr-un caz de infec\u021bie uman\u0103 \u00een Statele Unite. Aceast\u0103 muta\u021bie este asociat\u0103 cu o reproducere sporit\u0103 a virusului la mamifere, ceea ce sugereaz\u0103 o adaptabilitate crescut\u0103 a H5N1 la speciile non-aviare.<\/p>\n<p>Ca r\u0103spuns la aceste evolu\u021bii, exper\u021bi din institu\u021bii precum Colegiul de Medicin\u0103 Baylor pledeaz\u0103 pentru m\u0103suri proactive urgente. Ace\u0219tia subliniaz\u0103 necesitatea vaccin\u0103rii imediate \u00eempotriva H5N1 nu numai a p\u0103s\u0103rilor de curte, ci \u0219i a vacilor de lapte \u0219i a celor care le \u00eengrijesc. Astfel de strategii preventive sunt menite s\u0103 limiteze r\u0103sp\u00e2ndirea virusului \u0219i s\u0103 reduc\u0103 riscul unei poten\u021biale pandemii, lucru pe care epidemia COVID-19 a sf\u00e2r\u0219it prin a-l face recent.<\/p>\n<p>\u00cen ciuda acestor tendin\u021be alarmante, CDC afirm\u0103 c\u0103 riscul pentru public r\u0103m\u00e2ne sc\u0103zut \u00een acest moment. Cu toate acestea, situa\u021bia este monitorizat\u0103 \u00eendeaproape, iar autorit\u0103\u021bile de s\u0103n\u0103tate public\u0103 sunt preg\u0103tite s\u0103 ia m\u0103suri suplimentare dac\u0103 este necesar. Natura schimb\u0103toare a virusului H5N1 reaminte\u0219te importan\u021ba vigilen\u021bei \u0219i a preg\u0103tirii pentru combaterea noilor boli infec\u021bioase.<\/p>\n<p>Virusul H5N1 exist\u0103 de zeci de ani \u0219i a afectat \u00een principal p\u0103s\u0103rile. Adaptarea sa recent\u0103 la infectarea mamiferelor este f\u0103r\u0103 precedent \u0219i eviden\u021biaz\u0103 natura dinamic\u0103 a evolu\u021biei virusurilor. Aceast\u0103 tranzi\u021bie prezint\u0103 noi provoc\u0103ri pentru s\u0103n\u0103tatea public\u0103 \u0219i produc\u021bia animal\u0103, care necesit\u0103 un r\u0103spuns coordonat \u0219i informat pentru a gestiona riscurile poten\u021biale asociate cu acest agent patogen \u00een evolu\u021bie.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div><img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"360\" src=\"https:\/\/canal5.md\/wp-content\/uploads\/2025\/03\/982ec356ec76b2f80f13357b19646d99-optimized.jpg\" class=\"attachment-large size-large wp-post-image\" alt=\"\" srcset=\"https:\/\/canal5.md\/wp-content\/uploads\/2025\/03\/982ec356ec76b2f80f13357b19646d99-optimized.jpg 637w, https:\/\/canal5.md\/wp-content\/uploads\/2025\/03\/982ec356ec76b2f80f13357b19646d99-300x170-optimized.jpg 300w\">Virusul H5N1, cunoscut sub numele de grip\u0103 aviar\u0103, sufer\u0103 muta\u021bii pentru a se adapta la condi\u021bii noi. Aceast\u0103 evolu\u021bie a permis virusului s\u0103 infecteze nu numai p\u0103s\u0103rile, ci \u0219i mamiferele, inclusiv vacile care dau lapte \u0219i animalele de companie, ceea ce a st\u00e2rnit \u00eengrijorare cu privire la poten\u021bialul s\u0103u impact asupra s\u0103n\u0103t\u0103\u021bii umane, informeaz\u0103 focus.ua [\u2026]<\/div>\n","protected":false},"author":1,"featured_media":69573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[29],"tags":[],"class_list":["post-69572","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-externe_ro"],"_links":{"self":[{"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/posts\/69572","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/comments?post=69572"}],"version-history":[{"count":0,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/posts\/69572\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/media\/69573"}],"wp:attachment":[{"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/media?parent=69572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/categories?post=69572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/orheifm.live\/index.php\/wp-json\/wp\/v2\/tags?post=69572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}