{"id":4165,"date":"2015-12-04T16:02:40","date_gmt":"2015-12-04T16:02:40","guid":{"rendered":"http:\/\/eswiwp.akapivo.site\/knowledge-center\/?p=4165"},"modified":"2015-12-04T16:02:40","modified_gmt":"2015-12-04T16:02:40","slug":"quadrivalent-influenza-vaccines","status":"publish","type":"post","link":"https:\/\/eswiwp.akapivo.site\/knowledge-center\/quadrivalent-influenza-vaccines\/","title":{"rendered":"Quadrivalent influenza vaccines"},"content":{"rendered":"<p>Quadrivalent flu vaccines are designed to protect against four different flu viruses instead of three: two influenza A viruses and two influenza B viruses. For years, flu vaccines were designed to protect against three different flu viruses (trivalent). This included an influenza A H1N1 virus, an influenza A H3N2 virus and one B virus. Experts had to choose one B virus, even though there are two very different lineages of B viruses that both circulate during most seasons. This meant the vaccine did not protect against the group of B viruses not included in the vaccine. Adding another B virus to the vaccine aims to give broader protection against circulating flu viruses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quadrivalent flu vaccines are designed to protect against four different flu viruses instead of three: two influenza A viruses and two influenza B viruses. For years, flu vaccines were designed to protect against three different flu viruses (trivalent). This included an influenza A H1N1 virus, an influenza A H3N2 virus and one B virus. Experts [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[72],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.7.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Quadrivalent influenza vaccines - Knowledge center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/eswiwp.akapivo.site\/knowledge-center\/quadrivalent-influenza-vaccines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quadrivalent influenza vaccines - Knowledge center\" \/>\n<meta property=\"og:description\" content=\"Quadrivalent flu vaccines are designed to protect against four different flu viruses instead of three: two influenza A viruses and two influenza B viruses. For years, flu vaccines were designed to protect against three different flu viruses (trivalent). This included an influenza A H1N1 virus, an influenza A H3N2 virus and one B virus. 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