{"id":9786,"date":"2026-05-07T07:00:00","date_gmt":"2026-05-07T11:00:00","guid":{"rendered":"https:\/\/stillcoviding.ca\/en\/?p=9786"},"modified":"2026-05-11T00:02:08","modified_gmt":"2026-05-11T04:02:08","slug":"seasonal-covid-19-vaccination-in-2025-26-reduced-risk-of-illness-by-half-in-canada","status":"publish","type":"post","link":"https:\/\/stillcoviding.ca\/en\/news\/seasonal-covid-19-vaccination-in-2025-26-reduced-risk-of-illness-by-half-in-canada\/","title":{"rendered":"Seasonal COVID-19 vaccination in 2025\/26 reduced risk of illness by half in Canada"},"content":{"rendered":"<p>An interim analysis published in <i>Eurosurveillance<\/i> estimates that the COVID-19 vaccine for the 2025\/26 season reduced the risk of illness in Canada by about half at about 9&nbsp;weeks after vaccination, offering protection beyond the vaccine&#8217;s target strain.<\/p>\n<p>Seasonal COVID-19 vaccination is recommended in Canada as in several other countries for people older than 6 months with an increased risk of severe illness from the infection, and for all adults aged 65 or older. In the 2025\/26 respiratory virus season, the vaccine was updated to target the LP.8.1 strain as recommended by the World Health Organization (WHO), but other strains were also circulating during that period.<\/p>\n<h2>Estimating vaccine effectiveness during a challenging respiratory season<\/h2>\n<p>The research was conducted through the Canadian Sentinel Practitioner Surveillance Network, which sought to perform an early estimate of COVID-19 vaccine effectiveness for the 2025\/26 season and to explore the effect that influenza and other respiratory infections might have on these estimates.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An interim analysis published in <i>Eurosurveillance<\/i> estimates that the COVID-19 vaccine for the 2025\/26 season reduced the risk of illness in Canada by about half at about 9&nbsp;weeks after vaccination, offering protection beyond the vaccine&#8217;s target strain.<\/p>\n<p>Seasonal COVID-19 vaccination is recommended in Canada as in several other countries for people older than 6 months with an increased risk of severe illness from the infection, and for all adults aged 65 or older. In the 2025\/26 respiratory virus season, the vaccine was updated to target the LP.8.1 strain as recommended by the World Health Organization (WHO), but other strains were also circulating during that period.<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/stillcoviding.ca\/en\/news\/seasonal-covid-19-vaccination-in-2025-26-reduced-risk-of-illness-by-half-in-canada\/\">Continue reading<span class=\"screen-reader-text\">Seasonal COVID-19 vaccination in 2025\/26 reduced risk of illness by half in Canada<\/span><\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[96,18,8,14,15],"class_list":["post-9786","post","type-post","status-publish","format-standard","hentry","category-news","tag-canada","tag-covid-19","tag-research","tag-sars-cov-2","tag-vaccines","entry"],"_links":{"self":[{"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/posts\/9786","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/comments?post=9786"}],"version-history":[{"count":1,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/posts\/9786\/revisions"}],"predecessor-version":[{"id":9787,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/posts\/9786\/revisions\/9787"}],"wp:attachment":[{"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/media?parent=9786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/categories?post=9786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stillcoviding.ca\/en\/wp-json\/wp\/v2\/tags?post=9786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}