{"id":130187,"date":"2021-06-03T15:05:16","date_gmt":"2021-06-03T19:05:16","guid":{"rendered":"https:\/\/antiguanewsroom.com\/?p=130187"},"modified":"2021-06-03T15:05:16","modified_gmt":"2021-06-03T19:05:16","slug":"canada-recommends-mixing-and-matching-astrazeneca-pfizer-and-moderna-covid-19-vaccines","status":"publish","type":"post","link":"https:\/\/antiguanewsroom.com\/canada-recommends-mixing-and-matching-astrazeneca-pfizer-and-moderna-covid-19-vaccines\/","title":{"rendered":"Canada recommends mixing and matching AstraZeneca, Pfizer and Moderna COVID-19 vaccines"},"content":{"rendered":"<div id=\"antig-1816031068\" class=\"antig-ecab antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div><div id=\"antig-2840650634\" class=\"antig-before-content antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/medicalbenefitsscheme\" aria-label=\"PHOTO-2026-04-07-10-45-56\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1200\/h:400\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/PHOTO-2026-04-07-10-45-56.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1200\/h:400\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/PHOTO-2026-04-07-10-45-56.jpg 1200w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/PHOTO-2026-04-07-10-45-56.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:341\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/PHOTO-2026-04-07-10-45-56.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/04\/PHOTO-2026-04-07-10-45-56.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1200\" height=\"400\"   \/><\/a><\/div><section class=\"elementor-section elementor-top-section elementor-element elementor-element-700c5cd8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"700c5cd8\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3c23833e\" data-id=\"3c23833e\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-53baff83 elementor-widget elementor-widget-theme-post-content\" data-id=\"53baff83\" data-element_type=\"widget\" data-widget_type=\"theme-post-content.default\">\n<div class=\"elementor-widget-container\">\n<p>Canada is changing its guidelines on mixing and matching second doses of COVID-19 vaccines and is now advising Canadians to combine either the AstraZeneca-Oxford, Pfizer-BioNTech or Moderna shots interchangeably in certain situations.<\/p><div id=\"antig-116562065\" class=\"antig-content_5 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ablpag\" aria-label=\"Full-ABLP-Team-Digital-Billboard-1920x1080px\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1920w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:169\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:576\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:432\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 768w, https:\/\/mlavawteztbj.i.optimole.com\/w:1536\/h:864\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1536w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1920\" height=\"1080\"   \/><\/a><\/div>\n<p>The National Advisory Committee on Immunization (NACI) updated its guidance to provinces and territories Tuesday and recommended that a first shot of the AstraZeneca vaccine can be followed by either Moderna or Pfizer.<\/p>\n<p>For Canadians who have had a first dose of Moderna or Pfizer, NACI recommends they can now take either of the two shots as a second dose \u2014 because they both use a similar mRNA technology \u2014 if the same first dose is unavailable or unknown.<\/p><div id=\"antig-4121387612\" class=\"antig-content_4 antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div><div id=\"antig-1892320985\" class=\"antig-content_12 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ablpag\" aria-label=\"Full-ABLP-Team-Digital-Billboard-1920x1080px\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1920\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1920w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:169\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:576\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:432\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 768w, https:\/\/mlavawteztbj.i.optimole.com\/w:1536\/h:864\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2023\/01\/Full-ABLP-Team-Digital-Billboard-1920x1080px.jpg 1536w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1920\" height=\"1080\"   \/><\/a><\/div>\n<div id=\"antig-1883683147\" class=\"antig-inside-content-vacancy socialMedia\"><\/div>\n<p>The updated NACI guidance is based on emerging research from Spain and the United Kingdom that found mixing and matching AstraZeneca and Pfizer vaccines was both safe and effective at preventing COVID-19.<\/p><div id=\"antig-369587429\" class=\"antig-content antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/ReggaeInTheParkAntigua\" aria-label=\"lucanio\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:864\/h:1080\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 1080w, https:\/\/mlavawteztbj.i.optimole.com\/w:240\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 240w, https:\/\/mlavawteztbj.i.optimole.com\/w:819\/h:1024\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 819w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:960\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2020\/12\/lucanio.jpeg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1080\" height=\"1350\"   \/><\/a><\/div>\n<div id=\"antig-1599143909\" class=\"antig-content\"><\/div>\n<p>The details of the shift in guidance were confirmed publicly by officials from the Public Health Agency of Canada during a news conference Tuesday afternoon.<\/p>\n<p>Canada\u2019s Chief Public Health Officer Dr. Theresa Tam said the decision to combine mRNA vaccines interchangeably was \u201cnothing new\u201d and that the same principle had been applied to different types of vaccines in the past \u2014 including shots for influenza and Hepatitis A.<\/p><div id=\"antig-2113137298\" class=\"antig-content_2 antig-entity-placement\"><a href=\"https:\/\/www.courts.com\/antigua\/\" aria-label=\"500X500 (1)\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:500\/h:500\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:500\/h:500\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 500w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:300\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:150\/h:150\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2026\/03\/500X500-1.jpg 150w\" sizes=\"(max-width: 500px) 100vw, 500px\" width=\"500\" height=\"500\"   \/><\/a><\/div>\n<div id=\"antig-1104366800\" class=\"antig-content_2\"><\/div>\n<p>\u201cThis is not a new concept, so having a multi-dose series in terms of vaccines given by manufacturers is something that public health have used over time for many other vaccines,\u201d Tam said. \u201cWhen vaccines programs and supplies change this is not an unusual thing to do.\u201d<\/p>\n<p>The updated NACI recommendations state, \u201cNo data currently exist on the interchangeability of COVID-19 mRNA vaccines,\u201d but Tam said there are \u201congoing studies\u201d on the effectiveness of the approach that have yet to be published. The decision was made based on the similar makeup of the vaccines, which both target the spike protein of the coronavirus, she said.<\/p><div id=\"antig-241138542\" class=\"antig-content_3 antig-entity-placement\"><a href=\"https:\/\/www.antiguabarbudaculinarymonth.com\/\" aria-label=\"CM key_WEB 1300x300_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1301\/h:301\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2021\/04\/CM-key_WEB-1300x300_1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1301\/h:301\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2021\/04\/CM-key_WEB-1300x300_1.jpg 1301w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:69\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2021\/04\/CM-key_WEB-1300x300_1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:237\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2021\/04\/CM-key_WEB-1300x300_1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:178\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2021\/04\/CM-key_WEB-1300x300_1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1301\" height=\"301\"   \/><\/a><\/div>\n<div id=\"antig-528406715\" class=\"antig-content_3\"><\/div>\n<p>The recommendations will have a major impact on Canada\u2019s vaccine rollout, with previous NACI guidelines stating that a vaccination series that begins with AstraZeneca should follow up with the same type of shot and that mRNA vaccines should only be used interchangeably if the same first dose is unavailable or unknown.<\/p><div id=\"antig-2127460917\" class=\"antig-content_6 antig-entity-placement\"><a href=\"https:\/\/discoverflow.co\/web\/antigua\" aria-label=\"ANU CVP Digital Broadband 1200x400_1\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1201\/h:401\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1201w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:100\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:1024\/h:342\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 1024w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:256\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2025\/11\/ANU-CVP-Digital-Broadband-1200x400_1-1.jpg 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1201\" height=\"401\"   \/><\/a><\/div>\n<p>The updated guidelines follow moves by some provinces to combine different shots due to issues with the supply of AstraZeneca and a rare but serious type of blood clot that can result after the shot called vaccine-induced immune thrombotic thrombocytopenia (VITT), which NACI also cited as a reason for its decision in its guidance.<\/p>\n<p>More than 13 million people have received at least one dose of the Pfizer vaccine in Canada, in contrast to over 3.5 million of the Moderna vaccine and more than 2.1 million of the AstraZeneca vaccine as of May 22, according to the latest available federal government data.<\/p>\n<div id=\"antig-8431744\" class=\"antig-after-first-paragraph\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4d997e61 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d997e61\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2234f170\" data-id=\"2234f170\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-6a4c2707 elementor-widget elementor-widget-post-comments\" data-id=\"6a4c2707\" data-element_type=\"widget\" data-widget_type=\"post-comments.theme_comments\">\n<div class=\"elementor-widget-container\">\n<div id=\"comments\" class=\"comments\">\n<div id=\"respond\" class=\"comment-respond\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<div id=\"antig-2141482049\" class=\"antig-in-comments_2 antig-entity-placement\"><a href=\"https:\/\/www.facebook.com\/@hadeedmotorsltd\" aria-label=\"Hadeed_WEB_Banner_MG-2\"><img src=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1000\/h:250\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png\" alt=\"\"  srcset=\"https:\/\/mlavawteztbj.i.optimole.com\/w:1000\/h:250\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 1000w, https:\/\/mlavawteztbj.i.optimole.com\/w:300\/h:75\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 300w, https:\/\/mlavawteztbj.i.optimole.com\/w:768\/h:192\/q:mauto\/f:best\/https:\/\/antiguanewsroom.com\/wp-content\/uploads\/2024\/12\/Hadeed_WEB_Banner_MG-2.png 768w\" sizes=\"(max-width: 696px) 100vw, 696px\" width=\"1000\" height=\"250\"   \/><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Canada is changing its guidelines on mixing and matching second doses of COVID-19 vaccines and is now advising Canadians to combine either the AstraZeneca-Oxford, Pfizer-BioNTech or Moderna shots interchangeably in certain situations. The National Advisory Committee on Immunization (NACI) updated its guidance to provinces and territories Tuesday and recommended that a first shot of the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":130188,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-130187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.1 (Yoast SEO v24.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Canada recommends mixing and matching AstraZeneca, Pfizer and Moderna COVID-19 vaccines - Antigua News Room<\/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:\/\/antiguanewsroom.com\/canada-recommends-mixing-and-matching-astrazeneca-pfizer-and-moderna-covid-19-vaccines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Canada recommends mixing and matching AstraZeneca, Pfizer and Moderna COVID-19 vaccines\" \/>\n<meta property=\"og:description\" content=\"Canada is changing its guidelines on mixing and matching second doses of COVID-19 vaccines and is now advising Canadians to combine either the AstraZeneca-Oxford, Pfizer-BioNTech or Moderna shots interchangeably in certain situations. 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