{"id":71721,"date":"2021-01-08T17:13:01","date_gmt":"2021-01-08T17:13:01","guid":{"rendered":"https:\/\/quehacerpolitico.mx\/?p=71721"},"modified":"2021-01-08T17:13:01","modified_gmt":"2021-01-08T17:13:01","slug":"internacionales-carolina-alonso-romei-vacuna-de-pfizer-es-eficaz-contra-ultimas-cepas-del-covid-19","status":"publish","type":"post","link":"https:\/\/quehacerpolitico.mx\/?p=71721","title":{"rendered":"Internacionales\/\/\/Carolina Alonso Romei\/\/\/Vacuna de Pfizer es eficaz contra \u00faltimas cepas del COVID-19"},"content":{"rendered":"<h1 class=\"news-title\">Vacuna de Pfizer es eficaz contra \u00faltimas cepas del COVID-19<br \/>\nPor Carolina Alonso Romei<\/h1>\n<p>Internacionalista<\/p>\n<div class=\"news-subtitle\">\n<p>La vacuna contra el COVID-19 de Pfizer ser\u00eda efectiva contra variantes consideradas m\u00e1s contagiosas, seg\u00fan estudios comunicados este viernes por el laboratorio BioNTech<\/p>\n<\/div>\n<div class=\"social-share-box normal\">\n<p>La vacuna contra el COVID-19 de BioNTech\/Pfizer parece eficaz contra una &#8220;mutaci\u00f3n clave&#8221; de las variantes brit\u00e1nica y sudafricana del coronavirus, consideradas m\u00e1s contagiosas, seg\u00fan el resultado de estudios comunicados este viernes por el laboratorio BioNTech.<\/p>\n<p>&#8220;Los anticuerpos de las personas que han recibido la vacuna Pfizer-BioNTech COVID-19 <strong>neutralizan eficazmente el SARS-CoV-2 con una mutaci\u00f3n clave que se halla igualmente en dos cepas altamente transmisibles&#8221;<\/strong>identificadas en Reino Unido y Sud\u00e1frica, indica el laboratorio en un comunicado.<\/p>\n<div id=\"teads_ad\">\n<div id=\"div-gpt-ad-1548262875188-0\" data-google-query-id=\"COCwwtrpjO4CFdNsAQodN5cMgg\">Los autores subrayan los l\u00edmites de este estudio, que no incluye al conjunto de las mutaciones presentes en estas variantes. Por tanto no se puede llegar a la conclusi\u00f3n de que la eficacia de la vacuna ser\u00e1 la misma contra las variantes que contra el virus cl\u00e1sico.<\/div>\n<div data-google-query-id=\"COCwwtrpjO4CFdNsAQodN5cMgg\">\n<p>La emergencia en Reino Unido y en Sud\u00e1frica de estas dos nuevas variantes del coronavirus SARS-CoV-2 <strong>preocupa a la comunidad internacional debido a su mayor capacidad de transmisi\u00f3n,<\/strong> seg\u00fan los primeros datos.<\/p>\n<p>La nueva variante tiene en especial una mutaci\u00f3n, llamada N501Y, al nivel de la prote\u00edna Spike (esp\u00edcula) del coronavirus, la punta que se halla en su superficie y le permite pegarse a las c\u00e9lulas humanas para penetrarlas, con lo que desempe\u00f1a un rol clave en la infecci\u00f3n viral.<\/p>\n<p>Para probar la eficacia de la vacuna, los equipos de Pfizer\/BioNTech, asociados a la universidad de medicina de Texas, desarrollaron un coronavirus portador de esta mutaci\u00f3n, y luego extrajeron muestras de sangre de 20 personas que hab\u00edan recibido la vacuna Pfizer\/BioNTech, distribuida en varios pa\u00edses.<\/p>\n<p>No hallaron &#8220;ninguna reducci\u00f3n de la actividad de neutralizaci\u00f3n&#8221; frente al virus portador de la mutaci\u00f3n, respecto al virus cl\u00e1sico, seg\u00fan el comunicado.<\/p>\n<p>Los autores declararon no obstante que los resultados son limitados, ya que esta prueba no fue hecha sobre el &#8220;conjunto completo de las prote\u00ednas Spike halladas en las cepas de propagaci\u00f3n r\u00e1pida en Reino Unido o Sud\u00e1frica&#8221;.<\/p>\n<p>Con informaci\u00f3n de AFP<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Vacuna de Pfizer es eficaz contra \u00faltimas cepas del COVID-19 Por Carolina Alonso Romei Internacionalista&#8230;<\/p>\n","protected":false},"author":2,"featured_media":71724,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-71721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Internacionales\/\/\/Carolina Alonso Romei\/\/\/Vacuna de Pfizer es eficaz contra \u00faltimas cepas del COVID-19 -<\/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:\/\/quehacerpolitico.mx\/?p=71721\" \/>\n<meta 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