{"id":8388,"date":"2026-03-28T14:35:00","date_gmt":"2026-03-28T20:35:00","guid":{"rendered":"https:\/\/www.alasmedios.com\/?p=8388"},"modified":"2026-03-28T12:42:04","modified_gmt":"2026-03-28T18:42:04","slug":"nueva-variante-de-covid-19-desafia-la-inmunidad-global","status":"publish","type":"post","link":"https:\/\/www.alasmedios.com\/index.php\/2026\/03\/28\/nueva-variante-de-covid-19-desafia-la-inmunidad-global\/","title":{"rendered":"Nueva variante de COVID-19 desaf\u00eda la inmunidad global"},"content":{"rendered":"\n<p>Una nueva variante de <strong>COVID-19<\/strong>, identificada como <strong>BA.3.2<\/strong>, ha sido detectada en <strong>23 pa\u00edses<\/strong>, encendiendo alertas entre especialistas por su capacidad de propagaci\u00f3n y su potencial para evadir la inmunidad previa.<\/p>\n\n\n\n<p>De acuerdo con los <strong>Centros para el Control y la Prevenci\u00f3n de Enfermedades de Estados Unidos (CDC)<\/strong>, esta mutaci\u00f3n no se ha relacionado con una mayor <strong>gravedad cl\u00ednica<\/strong>, pero s\u00ed presenta un <strong>mayor escape inmunitario<\/strong>, lo que podr\u00eda reducir la protecci\u00f3n generada por <strong>vacunas<\/strong> o infecciones anteriores.<\/p>\n\n\n\n<p>Hasta el momento, la <strong>Secretar\u00eda de Salud<\/strong> no ha reportado casos de esta variante en <strong>M\u00e9xico<\/strong>, mientras que la <strong>Organizaci\u00f3n Mundial de la Salud (OMS)<\/strong> la mantiene bajo <strong>vigilancia<\/strong>, clasificando su riesgo como <strong>\u201cbajo\u201d<\/strong>, aunque reconoce su capacidad para facilitar nuevos contagios.<\/p>\n\n\n\n<p>CONTIN\u00daA LEYENDO: <a href=\"https:\/\/www.alasmedios.com\/index.php\/2026\/03\/28\/yemen-entra-en-la-guerra-misiles-contra-israel-nuevo-frente-en-medio-oriente\/\" type=\"post\" id=\"8377\">Yemen entra en la guerra: misiles contra Israel, nuevo frente en Medio Oriente<\/a><\/p>\n\n\n\n<p>En cuanto a los <strong>s\u00edntomas<\/strong>, la <strong>BA.3.2<\/strong> no muestra diferencias significativas frente a otros linajes de <strong>\u00d3micron<\/strong>. Entre los principales se encuentran <strong>fiebre, tos seca, dolor de garganta, fatiga, dolor de cabeza, congesti\u00f3n nasal y dolores musculares<\/strong>, con cuadros que en su mayor\u00eda son <strong>leves o moderados<\/strong>, especialmente en personas vacunadas.<\/p>\n\n\n\n<p>La variante fue identificada por primera vez en <strong>Sud\u00e1frica<\/strong> en <strong>noviembre de 2024<\/strong> y, desde entonces, ha registrado una <strong>expansi\u00f3n internacional<\/strong> con presencia en regiones de <strong>\u00c1frica, Europa, Asia y Am\u00e9rica<\/strong>. En algunos pa\u00edses europeos, lleg\u00f3 a representar hasta el <strong>30% de las secuencias analizadas<\/strong>.<\/p>\n\n\n\n<p>En <strong>Estados Unidos<\/strong>, los primeros casos corresponden a <strong>tres pacientes<\/strong>, incluidos adultos mayores con <strong>comorbilidades<\/strong> y un menor, todos con <strong>evoluci\u00f3n favorable<\/strong>. Sin embargo, los especialistas advierten que su capacidad de evasi\u00f3n inmunitaria podr\u00eda favorecer <strong>nuevos brotes<\/strong>, incluso entre personas previamente protegidas.<\/p>\n\n\n\n<p>Los <strong>CDC<\/strong> tambi\u00e9n alertaron sobre la posible <strong>subestimaci\u00f3n de su alcance global<\/strong>, debido a las limitaciones en la <strong>vigilancia gen\u00f3mica<\/strong> en varios pa\u00edses. Adem\u00e1s, han identificado la aparici\u00f3n de <strong>dos sublinajes<\/strong>, <strong>BA.3.2.1<\/strong> y <strong>BA.3.2.2<\/strong>, lo que evidencia una <strong>evoluci\u00f3n viral en curso<\/strong>.<\/p>\n\n\n\n<p>TE PUEDE INTERESAR: <a href=\"https:\/\/www.alasmedios.com\/index.php\/2026\/03\/14\/endometriosis-puede-tardar-hasta-12-anos-en-diagnosticarse\/\" type=\"post\" id=\"8239\">Endometriosis puede tardar hasta 12 a\u00f1os en diagnosticarse<\/a><\/p>\n\n\n\n<p>Aunque el riesgo actual se mantiene bajo, la expansi\u00f3n de <strong>BA.3.2<\/strong> confirma que el virus contin\u00faa adapt\u00e1ndose, lo que obliga a mantener la vigilancia y no bajar la guardia frente a una pandemia que a\u00fan no ha terminado.<\/p>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/05\/justicia-atencion-a-comunidades-indigenas-Puebla-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.alasmedios.com\/index.php\/2026\/05\/12\/buscan-acercar-justicia-y-proteccion-a-comunidades-indigenas-y-grupos-vulnerables-en-puebla\/\">Buscan acercar justicia y protecci\u00f3n a comunidades ind\u00edgenas y grupos vulnerables en Puebla<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/05\/Mundial-Mujeres-LIBRES-Hidalgo-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.alasmedios.com\/index.php\/2026\/05\/12\/arranca-mundial-mujeres-libres-hidalgo-sale-a-la-cancha-con-33-equipos\/\">Arranca Mundial Mujeres LIBRES: Hidalgo sale a la cancha con 33 equipos<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/05\/Puebla-detencion-de-124-personas-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" style=\"\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.alasmedios.com\/index.php\/2026\/05\/12\/mas-de-120-detenidos-en-puebla-en-solo-10-dias-decomisan-armas-droga-y-miles-de-litros-de-gas-lp\/\">M\u00e1s de 120 detenidos en Puebla en solo 10 d\u00edas; decomisan armas, droga y miles de litros de gas LP<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Una nueva variante de COVID-19, identificada como BA.3.2, ha sido detectada en 23 pa\u00edses, encendiendo alertas entre especialistas por su<\/p>\n","protected":false},"author":4,"featured_media":8389,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"yes","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","iawp_total_views":6,"footnotes":""},"categories":[42],"tags":[3490,3489,136],"class_list":["post-8388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-familia_salud","tag-ba-3-2","tag-covid-19","tag-salud"],"magazineBlocksPostFeaturedMedia":{"thumbnail":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-150x150.png","medium":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-300x182.png","medium_large":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-768x466.png","large":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-1024x622.png","1536x1536":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-1536x932.png","2048x2048":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19.png","colormag-highlighted-post":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-392x272.png","colormag-featured-post-medium":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-390x205.png","colormag-featured-post-small":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-130x90.png","colormag-featured-image":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-800x445.png","colormag-default-news":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-150x150.png","colormag-featured-image-large":"https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-1400x600.png"},"magazineBlocksPostAuthor":{"name":"Keila Rodr\u00edguez Pe\u00f1a","avatar":"https:\/\/secure.gravatar.com\/avatar\/a2553a2bfaa601b9d539b617c8793e151bdffb60f9e48a249912f86d4c9ebeef?s=96&d=mm&r=g"},"magazineBlocksPostCommentsNumber":"0","magazineBlocksPostExcerpt":"Una nueva variante de COVID-19, identificada como BA.3.2, ha sido detectada en 23 pa\u00edses, encendiendo alertas entre especialistas por su","magazineBlocksPostCategories":["Familia y Bienestar"],"magazineBlocksPostViewCount":15,"magazineBlocksPostReadTime":2,"magazine_blocks_featured_image_url":{"full":["https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19.png",2000,1214,false],"medium":["https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-300x182.png",300,182,true],"thumbnail":["https:\/\/www.alasmedios.com\/wp-content\/uploads\/2026\/03\/nueva-variante-de-COVID-19-150x150.png",150,150,true]},"magazine_blocks_author":{"display_name":"Keila Rodr\u00edguez Pe\u00f1a","author_link":"https:\/\/www.alasmedios.com\/index.php\/author\/keila\/"},"magazine_blocks_comment":0,"magazine_blocks_author_image":"https:\/\/secure.gravatar.com\/avatar\/a2553a2bfaa601b9d539b617c8793e151bdffb60f9e48a249912f86d4c9ebeef?s=96&d=mm&r=g","magazine_blocks_category":"<a href=\"#\" class=\"category-link category-link-42\">Familia y Bienestar<\/a>","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>Nueva variante de COVID-19 desaf\u00eda la inmunidad global<\/title>\r\n<meta name=\"description\" content=\"Una nueva variante de COVID-19, identificada como BA.3.2, ha sido detectada en 23 pa\u00edses, encendiendo alertas por su capacidad de propagaci\u00f3n\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" 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