Office F\u00e9d\u00e9ral de la S\u00e9curit\u00e9 Alimentaire et de la Sant\u00e9 Animale<\/a> de Berne ont lanc\u00e9 un test de d\u00e9tection COVID-19 qui ne n\u00e9cessite que 18 heures et n’est pas soumis \u00e0 des exigences \u00e9lev\u00e9es en mati\u00e8re de bios\u00e9curit\u00e9.<\/p>\nPour d\u00e9terminer l’immunit\u00e9 au SARS-CoV-2 et l’efficacit\u00e9 de vaccins potentiels, il faut d\u00e9terminer la quantit\u00e9 d’anticorps neutralisants dans le sang des personnes gu\u00e9ries ou vaccin\u00e9es. Un test de neutralisation traditionnel prend g\u00e9n\u00e9ralement deux \u00e0 trois jours et doit \u00eatre effectu\u00e9 avec des coronavirus infectieux dans un laboratoire respectant un niveau de bios\u00e9curit\u00e9 3.<\/p>\n
Afin de d\u00e9tecter les anticorps contre le SARS-CoV-2, les chercheurs ont utilis\u00e9 un autre virus qui ne se propage pas. Ils ont \u00e9chang\u00e9 les prot\u00e9ines d’enveloppe de ce virus contre les prot\u00e9ines du nouveau coronavirus, qui servent de m\u00e9diateurs pour l’entr\u00e9e du virus et de l’infection.<\/p>\n
Afin de v\u00e9rifier la fiabilit\u00e9 et la comparabilit\u00e9 avec un test de neutralisation conventionnel, les chercheurs l’ont appliqu\u00e9 \u00e0 des \u00e9chantillons de sang de patients atteints du COVID-19. Compar\u00e9 aux 56 heures pour le test conventionnel, le nouveau test est beaucoup plus rapide, avec seulement 18 heures avant d’obtenir le r\u00e9sultat. \u00ab\u00a0Un autre grand avantage est qu’il peut \u00eatre effectu\u00e9 dans presque tous les laboratoires m\u00e9dicaux, car aucune pr\u00e9caution de s\u00e9curit\u00e9 sophistiqu\u00e9e n’est n\u00e9cessaire\u00a0\u00bb, souligne le Dr Gert Zimmer de l’Institut de Virologie et d’Immunologie de Berne, auteur correspondant de l’\u00e9tude.<\/p>\n","protected":false},"excerpt":{"rendered":"
En utilisant des \u00e9chantillons de s\u00e9rum de patients atteints du COVID-19, un test d\u00e9velopp\u00e9 \u00e0 l’Institut de Virologie et d’Immunologie (IVI) de l’Universit\u00e9 de Berne et \u00e0 l’Office F\u00e9d\u00e9ral Suisse de la S\u00e9curit\u00e9 Alimentaire et de la Sant\u00e9 Animale d\u00e9termine la quantit\u00e9 d’anticorps neutralisants contre le SARS-CoV-2. En coop\u00e9ration avec des coll\u00e8gues de la Ruhr-Unversit\u00e4t […]<\/p>\n","protected":false},"author":3,"featured_media":9237,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"mc4wp_mailchimp_campaign":[]},"categories":[843,842],"tags":[1027,1056],"acf":[],"yoast_head":"\n
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