{"id":293,"date":"2025-01-09T08:37:00","date_gmt":"2025-01-09T08:37:00","guid":{"rendered":"https:\/\/healthscienceinstitute.org\/?p=293"},"modified":"2025-12-08T06:57:42","modified_gmt":"2025-12-08T06:57:42","slug":"latest-findings-on-the-impact-of-flu-vaccines-for-seniors","status":"publish","type":"post","link":"https:\/\/staging.scienceinhealth.com\/fr\/latest-findings-on-the-impact-of-flu-vaccines-for-seniors\/","title":{"rendered":"Derni\u00e8res d\u00e9couvertes sur l\u2019impact des vaccins contre la grippe pour les personnes \u00e2g\u00e9es"},"content":{"rendered":"<p><strong>Points cl\u00e9s<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les vaccins contre la grippe et le COVID-19 peuvent \u00eatre administr\u00e9s simultan\u00e9ment en toute s\u00e9curit\u00e9, offrant une protection combin\u00e9e pendant la saison des virus respiratoires.<\/li>\n\n\n\n<li>Les vaccins contre la grippe \u00e0 forte dose et avec adjuvant r\u00e9duisent consid\u00e9rablement les risques d\u2019hospitalisation chez les adultes de 65 ans ou plus, certaines \u00e9tudes montrant une r\u00e9duction allant jusqu\u2019\u00e0 62\u00a0% par rapport aux injections \u00e0 dose standard.<\/li>\n\n\n\n<li>Au cours de la saison 2024\u201325, les vaccins contre la grippe r\u00e9duisent les maladies n\u00e9cessitant des soins m\u00e9dicaux de 51\u201157\u00a0% et les taux d\u2019hospitalisation de 38\u201155\u00a0% chez les personnes \u00e2g\u00e9es.<\/li>\n\n\n\n<li>Le CDC et l\u2019ACIP recommandent maintenant les vaccins am\u00e9lior\u00e9s\u2014HD-IIV3, aIIV3 ou RIV4\u2014comme options pr\u00e9f\u00e9r\u00e9es pour les personnes \u00e2g\u00e9es.<\/li>\n\n\n\n<li>Le taux de vaccination chez les personnes \u00e2g\u00e9es reste inconstant en raison de la d\u00e9sinformation, des lacunes d\u2019acc\u00e8s et des disparit\u00e9s.<\/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\">Pourquoi c'est important<\/h2>\n\n\n\n<p>Les adultes \u00e2g\u00e9s de 65 ans et plus repr\u00e9sentent 70\u201185\u00a0% des d\u00e9c\u00e8s li\u00e9s \u00e0 la grippe et 50\u201170\u00a0% des hospitalisations, selon les Centres am\u00e9ricains pour le contr\u00f4le et la pr\u00e9vention des maladies (CDC) (<a class=\"\" href=\"https:\/\/www.cdc.gov\/flu\/highrisk\/65over.htm\">CDC, 2024<\/a>). Avec le vieillissement vient le d\u00e9clin du syst\u00e8me immunitaire, ce qui augmente la vuln\u00e9rabilit\u00e9 aux infections respiratoires et complique la r\u00e9cup\u00e9ration.<\/p>\n\n\n\n<p>Les vaccins contre la grippe restent l\u2019un des outils les plus efficaces pour pr\u00e9venir les cons\u00e9quences graves\u2014mais tous les vaccins ne sont pas aussi efficaces pour les personnes \u00e2g\u00e9es.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quoi de neuf dans la saison 2024\u20132025<\/h2>\n\n\n\n<p>De nouvelles donn\u00e9es provisoires du R\u00e9seau sur l\u2019efficacit\u00e9 des vaccins antigrippaux des CDC montrent que pour les adultes de 65 ans et plus, le vaccin a diminu\u00e9\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maladie grippale m\u00e9dicalement assist\u00e9e par 51\u201357%<\/li>\n\n\n\n<li>Hospitalisations par 38\u201355%<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>Cette protection est encore plus prononc\u00e9e avec les vaccins am\u00e9lior\u00e9s\u2014formulations \u00e0 haute dose (HD-IIV3) et adjuvant MF59 (aIIV3). Une vaste \u00e9tude r\u00e9trospective portant sur pr\u00e8s d\u2019un demi-million de personnes \u00e2g\u00e9es a montr\u00e9\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le vaccin \u00e0 haute dose a r\u00e9duit les hospitalisations d\u2019environ 25\u00a0%<\/li>\n\n\n\n<li>Le vaccin avec adjuvant a r\u00e9duit les hospitalisations d\u2019environ 62\u00a0%<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>Bien que les deux types aient surpass\u00e9 les vaccins \u00e0 dose standard, une \u00e9tude randomis\u00e9e en t\u00eate-\u00e0-t\u00eate de 2024 n\u2019a trouv\u00e9 aucune diff\u00e9rence significative entre les versions \u00e0 haute dose et avec adjuvant dans la pr\u00e9vention de la grippe (<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\">Science derri\u00e8re les vaccins am\u00e9lior\u00e9s<\/h2>\n\n\n\n<p>Le vieillissement affecte la fonction immunitaire\u2014un processus connu sous le nom de <strong>immunos\u00e9nescence<\/strong>\u2014entra\u00eenant une r\u00e9ponse plus faible aux vaccins traditionnels contre la grippe. Des vaccins am\u00e9lior\u00e9s contrent cela par l\u2019un ou l\u2019autre\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Augmentation de la dose d\u2019antig\u00e8ne (par exemple, Fluzone High-Dose)<\/li>\n\n\n\n<li>Utilisation d\u2019un adjuvant, tel que le MF59, pour stimuler une r\u00e9ponse immunitaire plus forte (par exemple, Fluad)<\/li>\n<\/ul>\n\n\n\n<p>Ces outils sont essentiels pour aider les syst\u00e8mes immunitaires plus \u00e2g\u00e9s \u00e0 produire une protection ad\u00e9quate contre le virus de la grippe.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommandations CDC mises \u00e0 jour<\/h2>\n\n\n\n<p>\u00c0 partir de 2025, le Comit\u00e9 consultatif des pratiques d\u2019immunisation (ACIP) du CDC recommande que les adultes \u00e2g\u00e9s de 65 ans et plus re\u00e7oivent l\u2019un des vaccins contre la grippe suivants\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HD-IIV3 (Vaccin antigrippal inactiv\u00e9 \u00e0 haute dose)<\/li>\n\n\n\n<li>AIIV3 (Vaccin antigrippal inactiv\u00e9 avec adjuvant MF59)<\/li>\n\n\n\n<li>RIV4 (Vaccin antigrippal recombinant)<\/li>\n<\/ul>\n\n\n\n<p>Ceux-ci sont pr\u00e9f\u00e9r\u00e9s \u00e0 l\u2019option de dose standard, bien que les vaccins standards soient toujours acceptables si aucune version am\u00e9lior\u00e9e n\u2019est disponible (<a class=\"\" href=\"https:\/\/www.cdc.gov\/mmwr\/volumes\/74\/wr\/mm7402a3.htm\">CDC, Calendrier de vaccination 2025<\/a>).<\/p>\n\n\n\n<p><strong><strong><a href=\"http:\/\/scienceinhealth.com\/newsletter\/\" target=\"_blank\" rel=\"noreferrer noopener\">Abonnez-vous gratuitement pour des articles de sant\u00e9 plus \u00e9clairants adapt\u00e9s \u00e0 vos besoins.<\/a><\/strong><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Obstacles \u00e0 l\u2019acc\u00e8s et \u00e0 l\u2019adoption<\/h2>\n\n\n\n<p>Malgr\u00e9 des preuves solides, l\u2019adoption du vaccin chez les personnes \u00e2g\u00e9es reste loin d\u2019\u00eatre optimale. Les donn\u00e9es du CDC montrent que seulement environ la moiti\u00e9 des adultes de plus de 65 ans sont vaccin\u00e9s chaque saison de grippe (AP News, 2024).<\/p>\n\n\n\n<p>Plusieurs facteurs contribuent \u00e0 cela\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9sinformation, surtout sur des ingr\u00e9dients comme le thim\u00e9rosal<\/li>\n\n\n\n<li>Manque de sensibilisation aux options am\u00e9lior\u00e9es<\/li>\n\n\n\n<li>Disparit\u00e9s d\u2019acc\u00e8s, en particulier dans les communaut\u00e9s rurales et minoritaires<\/li>\n<\/ul>\n\n\n\n<p>Les mesures prises r\u00e9cemment par le gouvernement f\u00e9d\u00e9ral pour \u00e9liminer progressivement le thim\u00e9rosal des vaccins, bien qu\u2019elles visent \u00e0 simplifier les protocoles de s\u00e9curit\u00e9, ont involontairement amplifi\u00e9 la confusion du public (<a>BioPharma Dive, 2025<\/a>).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co-administration du vaccin contre la grippe et le COVID-19<\/h2>\n\n\n\n<p>Le CDC et les professionnels de la sant\u00e9 recommandent maintenant de co-administrer les vaccins contre la grippe et la COVID-19, en particulier pour les personnes \u00e2g\u00e9es, afin de rationaliser les soins et d\u2019assurer une protection saisonni\u00e8re. Un rapport AP de 2024 a soulign\u00e9 la s\u00e9curit\u00e9 et l\u2019efficacit\u00e9 de cette approche, sans risque suppl\u00e9mentaire par rapport \u00e0 obtenir chaque tir s\u00e9par\u00e9ment (AP News, 2024).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Impact plus large sur la sant\u00e9 publique<\/h2>\n\n\n\n<p>Vacciner les personnes \u00e2g\u00e9es r\u00e9duit non seulement les cas de grippe, mais aussi\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Consultations aux urgences<\/li>\n\n\n\n<li>ICU reste<\/li>\n\n\n\n<li>Temps de r\u00e9cup\u00e9ration \u00e0 long terme<\/li>\n<\/ul>\n\n\n\n<p>Cela r\u00e9duit le fardeau des aidants et des syst\u00e8mes publics tels que Medicare, tout en am\u00e9liorant la qualit\u00e9 de vie des populations vieillissantes.<\/p>\n\n\n\n<p>La mod\u00e9lisation par le CDC montre que faire passer m\u00eame 25\u00a0% plus de personnes \u00e2g\u00e9es \u00e0 des vaccins am\u00e9lior\u00e9s pourrait pr\u00e9venir des milliers d\u2019hospitalisations chaque ann\u00e9e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ce que les a\u00een\u00e9s et les aidants peuvent faire<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Demandez sp\u00e9cifiquement pour Fluzone High-Dose, Fluad ou RIV4 dans les cliniques et les pharmacies.<\/li>\n\n\n\n<li>Planifiez votre tir id\u00e9alement en septembre ou octobre, bien que plus tard soit toujours mieux que jamais.<\/li>\n\n\n\n<li>Discuter de toute pr\u00e9occupation avec un professionnel de la sant\u00e9, en particulier concernant les ingr\u00e9dients ou le moment choisi.<\/li>\n\n\n\n<li>Restez au courant des calendriers de vaccination contre le VRS et la COVID-19, surtout si vous \u00eates \u00e0 haut risque.<\/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\">Sources<\/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><em>L\u2019article ne constitue en aucun cas un avis m\u00e9dical. Veuillez consulter un professionnel de la sant\u00e9 agr\u00e9\u00e9 avant de commencer tout traitement. Ce site peut recevoir des commissions \u00e0 partir des liens ou produits mentionn\u00e9s dans cet article.<\/em><\/p>\n\n\n\n<p><strong><a href=\"http:\/\/scienceinhealth.com\/newsletter\/\" target=\"_blank\" rel=\"noreferrer noopener\">Abonnez-vous gratuitement pour des articles de sant\u00e9 plus \u00e9clairants adapt\u00e9s \u00e0 vos besoins.<\/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":{"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"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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+. Learn which vaccines work best, CDC updates, and how to reduce hospitalization risk.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flu Vaccines for Seniors: New Data on Protection &amp; Benefits\" \/>\n<meta property=\"og:description\" content=\"Discover the latest research on flu vaccine effectiveness for adults 65+. 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