{"id":5195,"date":"2026-05-22T17:20:38","date_gmt":"2026-05-22T20:20:38","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=5195"},"modified":"2026-05-22T17:20:41","modified_gmt":"2026-05-22T20:20:41","slug":"pela-primeira-vez-medicamento-mostra-eficacia-na-prevencao-da-covid-19-apos-exposicao-ao-virus","status":"publish","type":"post","link":"https:\/\/portalam9.com.br\/?p=5195","title":{"rendered":"Pela primeira vez, medicamento mostra efic\u00e1cia na preven\u00e7\u00e3o da Covid-19 ap\u00f3s exposi\u00e7\u00e3o ao v\u00edrus"},"content":{"rendered":"\n

Tempo de leitura: 2 minutos <\/em><\/p>\n\n\n\n

Um avan\u00e7o que muda a forma de encarar a Covid-19<\/h2>\n\n\n\n

Um novo estudo trouxe um resultado in\u00e9dito desde o in\u00edcio da pandemia: pela primeira vez, um medicamento antiviral demonstrou efic\u00e1cia na preven\u00e7\u00e3o da\u00a0Covid-19\u00a0ap\u00f3s a exposi\u00e7\u00e3o ao v\u00edrus. O achado chama aten\u00e7\u00e3o porque abre caminho para uma nova estrat\u00e9gia de combate \u00e0 doen\u00e7a, al\u00e9m das vacinas.<\/p>\n\n\n\n

\"\"
Foto: Reprodu\u00e7\u00e3o<\/figcaption><\/figure>\n\n\n\n

Al\u00e9m disso, o resultado representa um marco importante na medicina antiviral, j\u00e1 que at\u00e9 ent\u00e3o n\u00e3o havia evid\u00eancia s\u00f3lida de prote\u00e7\u00e3o medicamentosa p\u00f3s-exposi\u00e7\u00e3o.<\/p>\n\n\n\n

O medicamento e como ele age no organismo<\/h2>\n\n\n\n

Ensitrelvir e seu mecanismo de a\u00e7\u00e3o<\/h3>\n\n\n\n

O medicamento estudado \u00e9 o Ensitrelvir, um antiviral que age bloqueando uma enzima essencial para a replica\u00e7\u00e3o do coronav\u00edrus. Dessa forma, ele impede que o v\u00edrus se multiplique no organismo logo nas primeiras fases da infec\u00e7\u00e3o.<\/p>\n\n\n\n

Al\u00e9m disso, o f\u00e1rmaco j\u00e1 havia sido utilizado no tratamento da Covid-19 no Jap\u00e3o, mas agora passa a ganhar destaque pelo seu potencial preventivo.<\/p>\n\n\n\n

O que mostrou o estudo cient\u00edfico<\/h2>\n\n\n\n

Redu\u00e7\u00e3o de casos ap\u00f3s exposi\u00e7\u00e3o<\/h3>\n\n\n\n

O estudo analisou pessoas que tiveram contato recente com infectados e receberam o medicamento em at\u00e9 72 horas. Entre os participantes, aqueles que tomaram o Ensitrelvir apresentaram uma redu\u00e7\u00e3o significativa na chance de desenvolver sintomas da Covid-19.<\/p>\n\n\n\n

Consequentemente, os dados indicam que o antiviral pode funcionar como uma esp\u00e9cie de prote\u00e7\u00e3o emergencial ap\u00f3s a exposi\u00e7\u00e3o ao v\u00edrus.<\/p>\n\n\n\n

Compara\u00e7\u00e3o com placebo<\/h3>\n\n\n\n

No grupo que recebeu placebo, a taxa de infec\u00e7\u00e3o sintom\u00e1tica foi maior. J\u00e1 entre os que utilizaram o medicamento, houve queda relevante no n\u00famero de casos, o que refor\u00e7a a efic\u00e1cia do tratamento preventivo.<\/p>\n\n\n\n

Quem pode se beneficiar da nova abordagem<\/h2>\n\n\n\n

Grupos mais vulner\u00e1veis<\/h3>\n\n\n\n

Embora a maioria da popula\u00e7\u00e3o j\u00e1 tenha algum n\u00edvel de imunidade contra o coronav\u00edrus, seja por vacina\u00e7\u00e3o ou infec\u00e7\u00e3o pr\u00e9via, ainda existem grupos de risco. Entre eles est\u00e3o idosos, imunossuprimidos e pessoas com comorbidades.<\/p>\n\n\n\n

Al\u00e9m disso, profissionais de sa\u00fade tamb\u00e9m podem se beneficiar dessa estrat\u00e9gia em situa\u00e7\u00f5es de exposi\u00e7\u00e3o direta ao v\u00edrus.<\/p>\n\n\n\n

Limita\u00e7\u00f5es e pr\u00f3ximos passos da pesquisa<\/h2>\n\n\n\n

Ainda em fase de avalia\u00e7\u00e3o global<\/h3>\n\n\n\n

Apesar dos resultados positivos, o medicamento ainda est\u00e1 em fase de avalia\u00e7\u00e3o por ag\u00eancias regulat\u00f3rias internacionais. Dessa forma, seu uso preventivo em larga escala ainda n\u00e3o foi totalmente liberado em muitos pa\u00edses.<\/p>\n\n\n\n

Por outro lado, o avan\u00e7o j\u00e1 \u00e9 considerado um passo importante para novas estrat\u00e9gias contra v\u00edrus respirat\u00f3rios.<\/p>\n\n\n\n

Um novo cap\u00edtulo no combate \u00e0s pandemias<\/h2>\n\n\n\n

Especialistas destacam que o estudo pode abrir portas para o desenvolvimento de outros antivirais com fun\u00e7\u00e3o preventiva. Al\u00e9m disso, refor\u00e7a a ideia de que o combate a v\u00edrus pode ir al\u00e9m da vacina\u00e7\u00e3o, incluindo tamb\u00e9m interven\u00e7\u00f5es medicamentosas r\u00e1pidas ap\u00f3s exposi\u00e7\u00e3o.<\/p>\n\n\n\n

Fonte: Fatos Desconhecidos <\/em><\/p>\n\n\n\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Tempo de leitura: 2 minutos Um avan\u00e7o que muda a forma de encarar a Covid-19<\/p>\n","protected":false},"author":3,"featured_media":5197,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[39],"class_list":["post-5195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health","tag-destaque"],"yoast_head":"\nPela primeira vez, medicamento mostra efic\u00e1cia na preven\u00e7\u00e3o da Covid-19 ap\u00f3s exposi\u00e7\u00e3o ao v\u00edrus - Portal Amazonas 9<\/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:\/\/portalam9.com.br\/?p=5195\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pela primeira vez, medicamento mostra efic\u00e1cia na preven\u00e7\u00e3o da Covid-19 ap\u00f3s exposi\u00e7\u00e3o ao v\u00edrus - 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