{"id":57827,"date":"2021-12-31T22:27:01","date_gmt":"2022-01-01T03:27:01","guid":{"rendered":"https:\/\/www.med.unc.edu\/medicine\/?p=57827"},"modified":"2023-06-06T18:17:49","modified_gmt":"2023-06-06T22:17:49","slug":"would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not","status":"publish","type":"post","link":"https:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/","title":{"rendered":"Would a 4th Dose of COVID Vaccine Wear Out Your Immune System? No, and Here\u2019s Why Not"},"content":{"rendered":"<figure id=\"attachment_51176\" class=\"thumbnail wp-caption alignright\" style=\"width: 199px\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-51176\" src=\"https:\/\/www.med.unc.edu\/medicine\/wp-content\/uploads\/sites\/945\/2021\/05\/cindy-Gay-240x300.jpg\" alt=\"Cindy Gay, MD, MPH\" width=\"189\" height=\"236\" srcset=\"https:\/\/www.med.unc.edu\/medicine\/wp-content\/uploads\/sites\/945\/2021\/05\/cindy-Gay-240x300.jpg 240w, https:\/\/www.med.unc.edu\/medicine\/wp-content\/uploads\/sites\/945\/2021\/05\/cindy-Gay.jpg 300w\" sizes=\"auto, (max-width: 189px) 100vw, 189px\" \/><figcaption class=\"caption wp-caption-text\">Cindy Gay, MD, MPH<\/figcaption><\/figure>\n<p>A CBS-17 report recognizes a hospital in Israel studying the safety and effectiveness of a second booster dose for some medical workers who got their last shot at least four months ago.<\/p>\n<p>One of the key concerns raised by the fourth-dose concept is that it might cause more harm than good by wearing out the immune system. But doctors say this shouldn\u2019t be much of a concern at all.<\/p>\n<p>\u201cThere\u2019s really no reason why the immune system would become fatigued or not be able to respond,\u201d said Cindy Gay, MD, assistant professor in the division of infectious diseases.<\/p>\n<p><a href=\"https:\/\/www.cbs17.com\/news\/north-carolina-news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/\">Watch CBS-17 and read more.<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A CBS-17 report recognizes a hospital in Israel studying the safety and effectiveness of a second booster dose for some medical workers who got their last shot at least four months ago. One of the key concerns raised by the fourth-dose concept is that it might cause more harm than good by wearing out the &hellip; <a href=\"https:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/\" aria-label=\"Read more about Would a 4th Dose of COVID Vaccine Wear Out Your Immune System? No, and Here\u2019s Why Not\">Read more<\/a><\/p>\n","protected":false},"author":69419,"featured_media":51176,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"layout":"","cellInformation":"","apiCallInformation":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[100,2],"tags":[631],"class_list":["post-57827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infectious-diseases","category-news","tag-631","odd"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Would a 4th Dose of COVID Vaccine Wear Out Your Immune System? No, and Here\u2019s Why Not | Department of Medicine<\/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:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Would a 4th Dose of COVID Vaccine Wear Out Your Immune System? No, and Here\u2019s Why Not | Department of Medicine\" \/>\n<meta property=\"og:description\" content=\"A CBS-17 report recognizes a hospital in Israel studying the safety and effectiveness of a second booster dose for some medical workers who got their last shot at least four months ago. One of the key concerns raised by the fourth-dose concept is that it might cause more harm than good by wearing out the &hellip; Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/\" \/>\n<meta property=\"og:site_name\" content=\"Department of Medicine\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/UNCDeptMedicine\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-01T03:27:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-06-06T22:17:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.med.unc.edu\/medicine\/wp-content\/uploads\/sites\/945\/2021\/05\/cindy-Gay.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"375\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Kim Morris\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@uncdeptmedicine\" \/>\n<meta name=\"twitter:site\" content=\"@uncdeptmedicine\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kim Morris\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.med.unc.edu\/medicine\/news\/would-a-4th-dose-of-covid-vaccine-wear-out-your-immune-system-no-and-heres-why-not\/\"},\"author\":{\"name\":\"Kim Morris\",\"@id\":\"https:\/\/www.med.unc.edu\/medicine\/#\/schema\/person\/9a358414a53d5237f9ba3f8daa55c529\"},\"headline\":\"Would a 4th Dose of COVID Vaccine Wear Out Your Immune System? 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