{"id":3579,"date":"2021-12-15T22:09:20","date_gmt":"2021-12-15T22:09:20","guid":{"rendered":"https:\/\/fehv.org\/?p=3579"},"modified":"2021-12-15T22:09:21","modified_gmt":"2021-12-15T22:09:21","slug":"effectiveness-third-dose-vaccine-covid-19","status":"publish","type":"post","link":"https:\/\/fehv.org\/en\/effectiveness-third-dose-vaccine-covid-19\/","title":{"rendered":"Effectiveness of the third dose of vaccine against COVID-19"},"content":{"rendered":"\n<p>Currently, there is a debate about the need to administer a <strong>third dose (booster) of the COVID-19 vaccine<\/strong> to the entire population. In the <strong><a href=\"https:\/\/www.nejm.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">New England Journal of Medicine<\/a><\/strong>, two studies have been published on the efficacy of the third dose of vaccine in the population of Israel, the country where administration of the third dose began in July 2021.<\/p>\n\n\n\n<p>Data from <strong>5,540,073 people vaccinated<\/strong> with the complete regimen were included. Around 90% of this population had received a third additional dose at least 5 months after the last one. Coronavirus infection was found to be only 0.3% among people who received the booster dose compared to 13% of those who had not.<\/p>\n\n\n\n<p>In the group of people who had received the third dose, the severity of the disease was reduced by a factor of <strong>17.9 in those older than 60 years of age<\/strong> and by 21.7 in those between 40 and 50 years of age. Finally, the study participants who received the booster dose had a 90% lower mortality rate than those who did not have the third dose.<\/p>\n\n\n\n<h2 class=\"mt-5 wp-block-heading\"><strong>High levels of detected antibodies<\/strong><\/h2>\n\n\n\n<p>On the other hand, in the journal <strong><a href=\"https:\/\/jamanetwork.com\/journals\/jama\" target=\"_blank\" rel=\"noreferrer noopener\">JAMA<\/a><\/strong>, another work carried out in Israel has been published in which the levels of IgG antibodies (defenses) were measured after the administration of the third dose of the vaccine to 97 people over 60 years of age. It was found that the amount of IgG antibodies increased markedly after the booster dose: mean baseline IgG titer vs. titer after the <strong>third dose: 440 vs. 25,468<\/strong>.<\/p>\n\n\n\n<h2 class=\"mt-5 wp-block-heading\"><strong>So, is the reinforcement vaccine necessary?<\/strong><\/h2>\n\n\n\n<p>In summary, <strong>the booster dose against COVID-19 is very effective<\/strong> since it significantly increases the level of defenses and so, the probability of infection by the coronavirus decreases. In addition, in case of <strong><a href=\"https:\/\/fehv.org\/en\/likelihood-coronavirus-infection-after-first-or-second-dose-vaccine\/\">infection<\/a><\/strong> the disease is milder and mortality is very significantly reduced.<\/p>\n","protected":false},"excerpt":{"rendered":"We analyze the need for a third dose of reinforcement against coronavirus and studies published in this regard.","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1541,621],"tags":[],"class_list":["post-3579","post","type-post","status-publish","format-standard","hentry","category-covid-19-en","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Effectiveness of the third dose of vaccine against COVID-19 - Cl\u00ednica FEHV<\/title>\n<meta name=\"description\" content=\"After various studies published, the third dose of the vaccine against Covid-19 is raised as a very effectiveness option.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fehv.org\/en\/effectiveness-third-dose-vaccine-covid-19\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Effectiveness of the third dose of vaccine against COVID-19\" \/>\n<meta property=\"og:description\" content=\"After various studies published, the third dose of the vaccine against Covid-19 is raised as a very effectiveness option.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fehv.org\/en\/effectiveness-third-dose-vaccine-covid-19\/\" \/>\n<meta property=\"og:site_name\" content=\"Cl\u00ednica FEHV\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/clinicaFEHV\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-15T22:09:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-12-15T22:09:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/fehv.org\/wp-content\/uploads\/2021\/12\/eficacia-tercera-dosis-vacuna-covid.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"ifranco\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"ifranco\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/fehv.org\\\/en\\\/effectiveness-third-dose-vaccine-covid-19\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/fehv.org\\\/en\\\/effectiveness-third-dose-vaccine-covid-19\\\/\"},\"author\":{\"name\":\"ifranco\",\"@id\":\"https:\\\/\\\/fehv.org\\\/#\\\/schema\\\/person\\\/5e92ddd4a04516dab21fb5b6fa90b777\"},\"headline\":\"Effectiveness of the third dose of vaccine against COVID-19\",\"datePublished\":\"2021-12-15T22:09:20+00:00\",\"dateModified\":\"2021-12-15T22:09:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/fehv.org\\\/en\\\/effectiveness-third-dose-vaccine-covid-19\\\/\"},\"wordCount\":301,\"publisher\":{\"@id\":\"https:\\\/\\\/fehv.org\\\/#organization\"},\"articleSection\":[\"Covid-19\",\"News\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/fehv.org\\\/en\\\/effectiveness-third-dose-vaccine-covid-19\\\/\",\"url\":\"https:\\\/\\\/fehv.org\\\/en\\\/effectiveness-third-dose-vaccine-covid-19\\\/\",\"name\":\"Effectiveness of the third dose of vaccine against COVID-19 - 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