{"id":293,"date":"2025-01-09T08:37:00","date_gmt":"2025-01-09T08:37:00","guid":{"rendered":"https:\/\/healthscienceinstitute.org\/?p=293"},"modified":"2026-08-25T15:00:06","modified_gmt":"2026-08-25T15:00:06","slug":"latest-findings-on-the-impact-of-flu-vaccines-for-seniors","status":"publish","type":"post","link":"https:\/\/scienceinhealth.com\/es\/2025\/01\/09\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\/","title":{"rendered":"\u00daltimos hallazgos sobre el impacto de las vacunas contra la gripe en los ancianos"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Puntos clave<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Las vacunas contra la gripe y el COVID-19 pueden administrarse de forma conjunta y segura, ofreciendo protecci\u00f3n combinada durante la temporada de los virus respiratorios.<\/li>\n\n\n\n<li>Las vacunas contra la gripe de alta dosis y adyuvadas reducen significativamente los riesgos de hospitalizaci\u00f3n en adultos mayores de 65 a\u00f1os, con algunos estudios que muestran una reducci\u00f3n de hasta el 62% respecto a las dosis est\u00e1ndar.<\/li>\n\n\n\n<li>En la temporada 2024-25, las vacunas contra la gripe redujeron las enfermedades atendidas m\u00e9dicamente en un 51-57% y las tasas de hospitalizaci\u00f3n en un 38-55% entre los ancianos.<\/li>\n\n\n\n<li>Los CDC y la ACIP ahora recomiendan las vacunas mejoradas -HD-IIV3, aIIV3 o RIV4- como opciones preferidas para adultos mayores.<\/li>\n\n\n\n<li>La adopci\u00f3n de vacunas entre las personas mayores sigue siendo inconsistente debido a la desinformaci\u00f3n, las brechas de acceso y las disparidades.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Por qu\u00e9 esto importa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los adultos de 65 a\u00f1os o m\u00e1s representan el 70-85% de las muertes relacionadas con la gripe y el 50-70% de las hospitalizaciones, seg\u00fan los Centros para el Control y la Prevenci\u00f3n de Enfermedades (CDC) de los Estados Unidos.<a class=\"\" href=\"https:\/\/www.cdc.gov\/flu\/highrisk\/65over.htm\">CDC, 2024<\/a>). Con el envejecimiento viene la disminuci\u00f3n del sistema inmunol\u00f3gico, lo que aumenta la vulnerabilidad a las infecciones respiratorias y complica la recuperaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Las vacunas contra la gripe siguen siendo una de las herramientas m\u00e1s efectivas para prevenir episodios graves, pero no todas son igualmente eficaces para los ancianos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Novedades en la temporada 2024-2025<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nuevos datos provisionales de la Red de Eficacia de la Vacuna contra la Gripe de los CDC muestran que para adultos mayores de 65 a\u00f1os, la vacuna redujo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>El 51-57% de los pacientes con gripe atendidos por m\u00e9dicos<\/li>\n\n\n\n<li>Hospitalizaciones en un 38-55%<br>(<a class=\"\" href=\"https:\/\/www.cdc.gov\/mmwr\/volumes\/74\/wr\/mm7406a2.htm\">CDC, 2025<\/a>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Esta protecci\u00f3n es a\u00fan m\u00e1s pronunciada con las formulaciones mejoradas de vacunas de alta dosis (HD-IIV3) y MF59-adyuvada (aIIV3). Un gran estudio retrospectivo de casi medio mill\u00f3n de personas mayores mostr\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La vacuna de alta dosis redujo las hospitalizaciones en aproximadamente un 25%<\/li>\n\n\n\n<li>La vacuna adjuvante redujo las hospitalizaciones en aproximadamente el 62%<br>(<a href=\"https:\/\/www.kp-scalresearch.org\/high-dose-and-adjuvanted-flu-vaccines-provided-better-protection-for-seniors\/\">Kaiser Permanente, 2024<\/a>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Aunque ambos tipos superaron las vacunas de dosis est\u00e1ndar, un estudio aleatorizado de 2024 no encontr\u00f3 ninguna diferencia significativa entre las versiones de alta dosis y adyuvadas en la prevenci\u00f3n de la gripe (<a href=\"https:\/\/www.cslseqirus.us\/news\/new-data-presented-at-idweek-2024\">CSL Seqirus, 2024<\/a>).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La ciencia detr\u00e1s de las vacunas mejoradas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El envejecimiento afecta la funci\u00f3n inmunol\u00f3gica, un proceso conocido como <strong>inmunosenescencia<\/strong>, lo que lleva a una respuesta m\u00e1s d\u00e9bil frente a las vacunas tradicionales contra la gripe. Las vacunas mejoradas contrarrestan esto mediante:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Aumento de la dosis del ant\u00edgeno (por ejemplo, Fluzone High-Dose)<\/li>\n\n\n\n<li>Usar un adyuvante, como MF59, para estimular una respuesta inmune m\u00e1s fuerte (por ejemplo, Fluad)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Estas herramientas son esenciales para ayudar a que los sistemas inmunes m\u00e1s viejos produzcan una protecci\u00f3n adecuada contra el virus de la gripe.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recomendaciones actualizadas del CDC<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A partir de 2025, el Comit\u00e9 Asesor sobre Pr\u00e1cticas de Inmunizaci\u00f3n (ACIP) de los CDC recomienda que los adultos mayores de 65 a\u00f1os reciban una de las siguientes vacunas contra la gripe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HD-IIV3 (Vacuna antigripal inactivada de alta dosis)<\/li>\n\n\n\n<li>aIIV3 (vacuna antigripal MF59-adyuvada inactivada)<\/li>\n\n\n\n<li>RIV4 (Vacuna recombinante contra la gripe)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Estas son preferidas a la opci\u00f3n de dosis est\u00e1ndar, aunque las vacunas est\u00e1ndar siguen siendo aceptables si no hay una versi\u00f3n mejorada disponible (<a class=\"\" href=\"https:\/\/www.cdc.gov\/mmwr\/volumes\/74\/wr\/mm7402a3.htm\">CDC, Calendario de inmunizaci\u00f3n 2025<\/a>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong><a href=\"http:\/\/scienceinhealth.com\/es\/newsletter\/\" target=\"_blank\" rel=\"noreferrer noopener\">Suscr\u00edbase gratis para obtener art\u00edculos de salud m\u00e1s perspicaces adaptados a sus necesidades.<\/a><\/strong><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Obst\u00e1culos al acceso y la adopci\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A pesar de la fuerte evidencia, el uso de vacunas entre los ancianos sigue estando lejos de ser \u00f3ptimo. Los datos de los CDC muestran que solo alrededor de la mitad de los adultos mayores de 65 a\u00f1os se vacunan cada temporada de gripe (AP News, 2024).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Varios factores contribuyen a ello:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Desinformaci\u00f3n, especialmente sobre ingredientes como el timerosal<\/li>\n\n\n\n<li>Falta de conciencia sobre las opciones mejoradas<\/li>\n\n\n\n<li>Disparidades en el acceso, en particular en las comunidades rurales y minoritarias<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Las recientes acciones federales para eliminar gradualmente el timerosal de las vacunas, aunque destinadas a simplificar los protocolos de seguridad, han amplificado inadvertidamente la confusi\u00f3n p\u00fablica (<a>BioPharma Dive, 2025<\/a>).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Administraci\u00f3n conjunta de vacunas contra la gripe y el COVID-19<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los CDC y los profesionales de la salud ahora recomiendan administrar conjuntamente las vacunas contra la gripe y el COVID-19, en particular para los ancianos, a fin de optimizar la atenci\u00f3n y garantizar una protecci\u00f3n estacional. Un informe del AP de 2024 enfatiz\u00f3 la seguridad y eficiencia de este enfoque, sin riesgos adicionales en comparaci\u00f3n con recibir cada disparo por separado (AP News, 2024).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Repercusiones m\u00e1s amplias en la salud p\u00fablica<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vacunar a los mayores reduce no s\u00f3lo los casos de gripe, sino tambi\u00e9n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visita a urgencias<\/li>\n\n\n\n<li>UCI se queda<\/li>\n\n\n\n<li>Tiempos de recuperaci\u00f3n a largo plazo<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Esto reduce las cargas para los cuidadores y los sistemas p\u00fablicos como Medicare, al tiempo que mejora la calidad de vida de las poblaciones que envejecen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El modelo de los CDC muestra que cambiar incluso un 25% m\u00e1s de personas mayores a vacunas mejoradas podr\u00eda evitar miles de hospitalizaciones al a\u00f1o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lo que pueden hacer las personas mayores y los cuidadores<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Solicite espec\u00edficamente Fluzone High-Dose, Fluad o RIV4 en cl\u00ednicas y farmacias.<\/li>\n\n\n\n<li>La hora de tu disparo es idealmente en septiembre u octubre, aunque m\u00e1s tarde sigue siendo mejor que nada.<\/li>\n\n\n\n<li>Discutir cualquier preocupaci\u00f3n con un profesional de la salud-particularmente en relaci\u00f3n a los ingredientes o el momento.<\/li>\n\n\n\n<li>Mant\u00e9ngase al d\u00eda sobre los programas de vacunaci\u00f3n contra el VSR y la COVID-19, especialmente si est\u00e1 en alto riesgo.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Fuentes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CDC. \u201cPeople 65 Years and Older &amp; Influenza.\u201d <a class=\"\" href=\"https:\/\/www.cdc.gov\/flu\/highrisk\/65over.htm\">cdc.gov<\/a><\/li>\n\n\n\n<li>CDC. \u201cInterim Estimates of 2024\u201325 Seasonal Influenza Vaccine Effectiveness.\u201d <a class=\"\" href=\"https:\/\/www.cdc.gov\/mmwr\/volumes\/74\/wr\/mm7406a2.htm\">cdc.gov<\/a><\/li>\n\n\n\n<li>Kaiser Permanente Southern California Research. <a href=\"https:\/\/www.kp-scalresearch.org\/high-dose-and-adjuvanted-flu-vaccines-provided-better-protection-for-seniors\/\">kp-scalresearch.org<\/a><\/li>\n\n\n\n<li>CSL Seqirus. \u201cIDWeek 2024 Data.\u201d <a href=\"https:\/\/www.cslseqirus.us\/news\/new-data-presented-at-idweek-2024\">cslseqirus.us<\/a><\/li>\n\n\n\n<li>CDC. \u201c2025 Recommended Adult Immunization Schedule.\u201d <a class=\"\" href=\"https:\/\/www.cdc.gov\/mmwr\/volumes\/74\/wr\/mm7402a3.htm\">cdc.gov<\/a><\/li>\n\n\n\n<li>AP News. \u201cDon\u2019t Wait for a Holiday Surge&#8230;\u201d <a href=\"https:\/\/apnews.com\/article\/flu-covid-vaccine-thanksgiving-christmas-c44d008754ef95b78761d218d9ab77da\">apnews.com<\/a><\/li>\n\n\n\n<li>BioPharma Dive. \u201cHHS to Phase Out Thimerosal&#8230;\u201d <a href=\"https:\/\/www.biopharmadive.com\/news\/kennedy-thimerosal-vaccines-hhs-adopt-cdc-recommendation\/753838\/\">biopharmadive.com<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>El art\u00edculo no constituye en modo alguno un consejo m\u00e9dico. Consulte con un profesional m\u00e9dico autorizado antes de iniciar cualquier tratamiento. Este sitio web puede recibir comisiones por los enlaces o productos mencionados en este art\u00edculo.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"http:\/\/scienceinhealth.com\/es\/newsletter\/\" target=\"_blank\" rel=\"noreferrer noopener\">Suscr\u00edbase gratis para obtener art\u00edculos de salud m\u00e1s perspicaces adaptados a sus necesidades.<\/a><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Key Points Why This Matters Adults aged 65 and older account for 70\u201385% of flu-related deaths and 50\u201370% of&hellip;<\/p>","protected":false},"author":21,"featured_media":294,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,3,11],"tags":[309,308],"class_list":["post-293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-family-health","category-health-news-trends","category-senior-health","tag-flu-vaccine","tag-flu-vaccines-for-seniors"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flu Vaccines for Seniors: New Data on Protection &amp; Benefits<\/title>\n<meta name=\"description\" content=\"Discover the latest research on flu vaccine effectiveness for adults 65+. 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Learn which vaccines work best, CDC updates, and how to reduce hospitalization risk.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/scienceinhealth.com\/es\/2025\/01\/09\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\/\" \/>\n<meta property=\"og:site_name\" content=\"Health Science Institute\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-09T08:37:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-25T15:00:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/scienceinhealth.com\/wp-content\/uploads\/2024\/07\/Seniors-Flu.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Dr Aneesia Satheesan, BAMS, MD, MSc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr Aneesia Satheesan, BAMS, MD, MSc\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/\"},\"author\":{\"name\":\"Dr Aneesia Satheesan, BAMS, MD, MSc\",\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/de\\\/#\\\/schema\\\/person\\\/77366e2871d23a098a203a592fac29d4\"},\"headline\":\"Latest Findings on the Impact of Flu Vaccines for Seniors\",\"datePublished\":\"2025-01-09T08:37:00+00:00\",\"dateModified\":\"2026-08-25T15:00:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/\"},\"wordCount\":760,\"commentCount\":3,\"publisher\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/de\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/scienceinhealth.com\\\/wp-content\\\/uploads\\\/2024\\\/07\\\/Seniors-Flu.webp\",\"keywords\":[\"flu vaccine\",\"Flu vaccines for seniors\"],\"articleSection\":[\"Family Health\",\"Health News &amp; Trends\",\"Senior Health\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/#respond\"]}]},{\"@type\":[\"WebPage\",\"MedicalWebPage\"],\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/\",\"url\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/\",\"name\":\"Flu Vaccines for Seniors: New Data on Protection & Benefits\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/de\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/scienceinhealth.com\\\/2025\\\/01\\\/09\\\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/scienceinhealth.com\\\/wp-content\\\/uploads\\\/2024\\\/07\\\/Seniors-Flu.webp\",\"datePublished\":\"2025-01-09T08:37:00+00:00\",\"dateModified\":\"2026-08-25T15:00:06+00:00\",\"description\":\"Discover the latest research on flu vaccine effectiveness for adults 65+. 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