{"id":148562,"date":"2022-02-12T12:12:07","date_gmt":"2022-02-12T16:12:07","guid":{"rendered":"https:\/\/digital58.com.ve\/site\/?p=148562"},"modified":"2022-02-12T12:12:07","modified_gmt":"2022-02-12T16:12:07","slug":"efectividad-de-vacuna-de-refuerzo-contra-el-covid-19-disminuye-tras-cuatro-meses-segun-estudios","status":"publish","type":"post","link":"https:\/\/digital58.com.ve\/site\/2022\/02\/12\/efectividad-de-vacuna-de-refuerzo-contra-el-covid-19-disminuye-tras-cuatro-meses-segun-estudios\/","title":{"rendered":"Efectividad de vacuna de refuerzo contra el COVID-19 disminuye tras cuatro meses seg\u00fan estudios"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-118118 aligncenter\" src=\"https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2-300x200.jpg\" alt=\"\" width=\"742\" height=\"494\" srcset=\"https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2-300x200.jpg 300w, https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2-768x512.jpg 768w, https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2-720x480.jpg 720w, https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2-480x320.jpg 480w, https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2020\/07\/vacuna-moderna-27-07-20-2.jpg 800w\" sizes=\"auto, (max-width: 742px) 100vw, 742px\" \/><\/p>\n<p>Los datos mostraron que la eficacia de la vacuna contra las visitas a los servicios de urgencias y las hospitalizaciones fue mayor despu\u00e9s de la tercera dosis que despu\u00e9s de la segunda, pero disminuy\u00f3 con el tiempo<\/p>\n<p><strong>Internacionales, 12 de febrero de 2022 (ND58).-<\/strong> Las dosis de refuerzo de las vacunas contra el coronavirus de Pfizer\/BioNTech y Moderna son seguras y ofrecen altos niveles de protecci\u00f3n contra el COVID-19 grave, si bien esa protecci\u00f3n puede disminuir con el tiempo, seg\u00fan dos estudios publicados este viernes por los Centros para el Control y la Prevenci\u00f3n de Enfermedades de Estados Unidos (CDC, por sus siglas en ingl\u00e9s).<\/p>\n<p>La evidencia de que la protecci\u00f3n disminuye \u00abrefuerza la importancia de seguir considerando dosis adicionales para mantener o mejorar la protecci\u00f3n\u00bb contra las hospitalizaciones y visitas a urgencias relacionadas con el COVID-19, dice el estudio.<\/p>\n<p>Uno de los estudios, publicado en la revista acad\u00e9mica \u00abMorbidity and Mortality Weekly Report\u00bb de los CDC, examin\u00f3 la eficacia de la vacuna contra las hospitalizaciones por COVID-19 y los ingresos a urgencias y a los centros de salud entre los adultos de Estados Unidos que fueron vacunados completamente con dos dosis o recibieron una tercera dosis de la vacuna como refuerzo.<\/p>\n<p>Los datos incluyeron 241.204 visitas a urgencias y 93.408 hospitalizaciones en 10 estados entre el 26 de agosto y el 22 de enero.<\/p>\n<p>Con la variante \u00f3micron dominante en Estados Unidos, la eficacia de la vacuna fue del 87% contra las visitas a urgencias o al servicio de emergencias por COVID-19 y del 91% contra las hospitalizaciones en los dos meses posteriores a la tercera dosis. Los datos mostraron que la eficacia se redujo al 66% y al 78%, respectivamente, en el cuarto mes.<\/p>\n<p>Despu\u00e9s de solo dos dosis de la vacuna, cuando la variante \u00f3micron era la predominante, la eficacia de la vacuna contra las hospitalizaciones descendi\u00f3 del 71% en los dos meses posteriores a la vacunaci\u00f3n al 54% en los cinco meses siguientes, seg\u00fan el estudio.<\/p>\n<p>Los datos tambi\u00e9n mostraron que la eficacia de la vacuna disminu\u00eda cuando la variante delta era la dominante.<\/p>\n<p>Entre aquellos que recibieron tres dosis durante el tiempo en que la variante delta era dominante, la eficacia de la vacuna contra las hospitalizaciones asociadas al COVID-19 descendi\u00f3 del 96% a los dos meses de la vacunaci\u00f3n al 76% al menos meses despu\u00e9s.<\/p>\n<p>Sin embargo, los investigadores se\u00f1alaron que esta \u00faltima estimaci\u00f3n podr\u00eda ser imprecisa porque se dispon\u00eda de pocos datos sobre las personas vacunadas durante al menos cuatro meses despu\u00e9s de una tercera dosis durante el tiempo en que la variante delta era la predominante.<\/p>\n<p>En general, \u00abestos hallazgos subrayan la importancia de recibir una tercera dosis de la vacuna contra el COVID-19 de ARNm para prevenir tanto las visitas a urgencias asociadas al covid-19 como las hospitalizaciones por covid-19 entre los adultos\u00bb, escribieron los investigadores de los CDC y otras instituciones de Estados Unidos en el nuevo estudio.<\/p>\n<p>El segundo estudio de los CDC analiz\u00f3 los datos de seguridad de las vacunas de refuerzo de covid-19 declarados al Sistema de Notificaci\u00f3n de Efectos Adversos de Vacunas del gobierno federal entre septiembre y febrero entre 721.562 adultos que recibieron vacunas de refuerzo.<\/p>\n<p>El estudio descubri\u00f3 que las dosis de refuerzo de las vacunas contra el coronavirus siguen siendo seguras, y los que recibieron el mismo tipo de vacuna para todas sus vacunaciones tendieron a tener menos reacciones despu\u00e9s de la dosis de refuerzo que despu\u00e9s de su segunda dosis.<\/p>\n<p>\u00abLos responsables de la vacunaci\u00f3n deben informar a los pacientes que se espera que se produzcan reacciones locales y sist\u00e9micas despu\u00e9s de una dosis de refuerzo de la vacuna hom\u00f3loga de ARNm contra el COVID-19.<\/p>\n<p>Sin embargo, estas reacciones son menos frecuentes que las que se producen despu\u00e9s de la segunda dosis del esquema inicial\u00bb, escribieron los investigadores, pertenecientes a los CDC y a la Administraci\u00f3n de Alimentos y Medicamentos de Estados Unidos (FDA, por sus siglas en ingl\u00e9s).<\/p>\n<p>&nbsp;<\/p><div class=\"vnssb69ef7563b91ab\" ><p style=\"text-align: center;\"><a href=\"https:\/\/t.me\/noticiasdigital58\" target=\"_blank\" rel=\"noopener\"><img class=\"aligncenter size-full wp-image-125363\" src=\"https:\/\/digital58.com.ve\/site\/wp-content\/uploads\/2021\/04\/banner-telegram-web-2021.png\" alt=\"\" width=\"600\" height=\"90\" \/><\/a><\/p><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.vnssb69ef7563b91ab {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.vnssb69ef7563b91ab {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.vnssb69ef7563b91ab {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.vnssb69ef7563b91ab {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.vnssb69ef7563b91ab {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p><strong>Redacci\u00f3n ND58 | Fuente: CNN<\/strong><br \/>\n<strong>Edici\u00f3n: Villasmil, Henry<\/strong><br \/>\n<strong>Gr\u00e1fica: Archivo<\/strong><\/p>\n<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div>","protected":false},"excerpt":{"rendered":"<p>Los datos mostraron que la eficacia de la vacuna contra las visitas a los servicios de urgencias y las hospitalizaciones<\/p>\n","protected":false},"author":40,"featured_media":135893,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_uag_custom_page_level_css":"","footnotes":""},"categories":[5405],"tags":[13648,1304,27258,8,13793,6003,24814,26221],"class_list":["post-148562","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-salud","tag-covid-19","tag-estados-unidos","tag-estudios-covid-19","tag-internacionales","tag-sars-cov-2","tag-vacunacion","tag-variante-delta","tag-variante-omicron"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Efectividad de vacuna de refuerzo contra el COVID-19 disminuye tras cuatro meses seg\u00fan estudios<\/title>\n<meta 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