Le contenu d\u00e9crit une progression significative du virus West Nile (WNV) en France en 2026, alors qu\u2019il \u00e9tait jusqu\u2019ici principalement cantonn\u00e9 \u00e0 l\u2019arc m\u00e9diterran\u00e9en. Le WNV est transmis par des moustiques du genre Culex, pr\u00e9sents sur l\u2019ensemble du territoire national, dans un cycle dont le principal r\u00e9servoir est l\u2019avifaune. L\u2019\u00eatre humain et le cheval sont des h\u00f4tes accidentels, avec une charge virale trop faible pour permettre une retransmission par le moustique, ce qui en fait un \u00ab cul-de-sac \u00e9pid\u00e9miologique \u00bb.<\/p>\n
L\u2019infection par le WNV est le plus souvent asymptomatique ou pauci-symptomatique (environ 80 % des cas), se limitant souvent \u00e0 un syndrome f\u00e9brile parfois associ\u00e9 \u00e0 des douleurs et une \u00e9ruption cutan\u00e9e. Environ 1 % des infections \u00e9voluent vers une forme neuro-invasive (m\u00e9ningite, m\u00e9ningo-enc\u00e9phalite), plus fr\u00e9quente chez les personnes \u00e2g\u00e9es et les patients immunod\u00e9prim\u00e9s. Cette faible mais r\u00e9elle proportion de formes graves en fait un sujet de vigilance pour les professionnels de sant\u00e9 et les autorit\u00e9s sanitaires.<\/p>\n
Le 17 septembre 2026, le groupe de travail SPILF Emergences de la Soci\u00e9t\u00e9 de pathologie infectieuse de langue fran\u00e7aise a publi\u00e9 un \u00ab Top 10 des \u00e9mergences infectieuses en m\u00e9decine humaine \u00bb. Ce classement repose sur des donn\u00e9es collect\u00e9es entre le 1er juin et le 16 septembre 2026 aupr\u00e8s de sources officielles internationales et nationales, notamment l\u2019Organisation mondiale de la sant\u00e9 (OMS), les Centers for Disease Control and Prevention (CDC, \u00c9tats-Unis), le Centre europ\u00e9en de pr\u00e9vention et de contr\u00f4le des maladies (ECDC), l\u2019Organisation panam\u00e9ricaine de la sant\u00e9 (OPS), Africa CDC et Sant\u00e9 publique France.<\/p>\n
Le classement ne d\u00e9pend pas uniquement de la gravit\u00e9 intrins\u00e8que de chaque infection. Trois dimensions sont \u00e9valu\u00e9es sur 5 : la gravit\u00e9 (l\u00e9talit\u00e9, s\u00e9v\u00e9rit\u00e9 clinique, impact sur les populations vuln\u00e9rables), l\u2019extension de la circulation (nombre de cas, dynamique et diffusion g\u00e9ographique des flamb\u00e9es, \u00e9volution par rapport \u00e0 l\u2019ann\u00e9e pr\u00e9c\u00e9dente) et le risque d\u2019importation en France (voies d\u2019entr\u00e9e, vuln\u00e9rabilit\u00e9 du territoire). Ces scores sont ajust\u00e9s en fonction de l\u2019indice Global Health Security (GHS), qui refl\u00e8te les capacit\u00e9s de r\u00e9ponse du pays touch\u00e9, ainsi que de facteurs contextuels (rassemblements de masse, saison d\u2019activit\u00e9 des moustiques Aedes et Culex).<\/p>\n
Dans ce dispositif de surveillance, le West Nile virus arrive en premi\u00e8re position avec un score composite de 5,40, d\u00e9taill\u00e9 comme suit : gravit\u00e9 4\/5, extension 4,8\/5, risque d\u2019importation 4,5\/5. Le risque pour la France est qualifi\u00e9 d\u2019\u00ab \u00e9lev\u00e9 \u00bb. Cette \u00e9valuation met en avant un enjeu de vigilance accrue en sant\u00e9 publique, en lien avec la circulation du virus, la pr\u00e9sence de vecteurs sur tout le territoire et la vuln\u00e9rabilit\u00e9 particuli\u00e8re de certains groupes de population. Elle fournit un outil d\u2019aide au suivi et \u00e0 la priorisation des risques infectieux pour les autorit\u00e9s sanitaires fran\u00e7aises, sans toutefois d\u00e9tailler de mesures op\u00e9rationnelles sp\u00e9cifiques dans le texte source.\u00a0(contenu r\u00e9sum\u00e9 par l’IA)Lire la Suite<\/a>\u200b<\/p>","protected":false},"excerpt":{"rendered":" Le contenu d\u00e9crit une progression significative du virus West Nile (WNV) en France en 2026, alors qu\u2019il \u00e9tait jusqu\u2019ici principalement cantonn\u00e9 \u00e0 l\u2019arc m\u00e9diterran\u00e9en. Le WNV est transmis par des […]<\/p>\n","protected":false},"author":1,"featured_media":4499,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[227,118],"class_list":["post-21546","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante-publique-prevention-epidemiologie","tag-ia","tag-vih-org"],"_links":{"self":[{"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/posts\/21546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21546"}],"version-history":[{"count":0,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/posts\/21546\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=\/wp\/v2\/media\/4499"}],"wp:attachment":[{"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/veilles-affaires-sociales.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}