{"id":12188,"date":"2025-04-17T18:13:19","date_gmt":"2025-04-17T23:13:19","guid":{"rendered":"https:\/\/www.voicesforvaccines.org\/?post_type=jtf_topics&#038;p=12188"},"modified":"2025-04-29T18:23:07","modified_gmt":"2025-04-29T23:23:07","slug":"how-long-does-immunity-from-mmr-vaccines-last","status":"publish","type":"jtf_topics","link":"https:\/\/www.voicesforvaccines.org\/es\/jtf_topics\/how-long-does-immunity-from-mmr-vaccines-last\/","title":{"rendered":"How long does immunity from MMR vaccines last?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row source=&#8221;&#8221; text=&#8221;Clinical Trials&#8221; font_container=&#8221;tag:h2|text_align:left&#8221; use_theme_fonts=&#8221;yes&#8221; google_fonts=&#8221;font_family:Abril%20Fatface%3Aregular|font_style:400%20regular%3A400%3Anormal&#8221; link=&#8221;&#8221; css=&#8221;.vc_custom_1708910874436{border-top-width: 1px !important;border-right-width: 1px !important;border-bottom-width: 1px !important;border-left-width: 1px !important;}&#8221;][vc_column][vc_row_inner][vc_column_inner][vc_custom_heading text=&#8221;The Claim:&#8221; font_container=&#8221;tag:h3|text_align:left&#8221; use_theme_fonts=&#8221;yes&#8221;][vc_column_text css=&#8221;&#8221;]In a\u00a0<a href=\"https:\/\/x.com\/newstart_2024\/status\/1910315112549744932\" target=\"_blank\" rel=\"noopener\">CBS news interview,<\/a>\u00a0HHS Secretary RFK Jr. claims that immunity from the MMR vaccine wanes quickly in order to explain why the measles outbreaks are spreading farther and longer than they might otherwise.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner][vc_custom_heading text=&#8221;The Facts:&#8221; font_container=&#8221;tag:h3|text_align:left&#8221; use_theme_fonts=&#8221;yes&#8221;][vc_column_text css=&#8221;&#8221;]The claim that the MMR wanes quickly is untrue.\u00a0Even if\u00a0the\u00a0antibodies your body makes from the vaccines lessen over time, your immune system still remembers\u00a0the\u00a0virus using special\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC6102609\/\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/voicesforvaccines.us6.list-manage.com\/track\/click?u%3De17a65409cd8f13ba7e58cc97%26id%3D01086c4f64%26e%3Dbcaec034a7&amp;source=gmail&amp;ust=1744934833299000&amp;usg=AOvVaw2R3ft5bXvMkODlGfB8qfLx\">memory cells<\/a>. These memory cells usually remain in your body for your entire life, able to respond quickly and protect you from\u00a0measles\u00a0if you&#8217;re ever exposed.<\/p>\n<p>Also, measles is so\u00a0<a href=\"https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/measles-what-you-should-know#\" target=\"_blank\" rel=\"noopener\">contagious<\/a>\u00a0that if a person susceptible to measles walks into a room where someone with measles had been two hours prior and left, 90% of those people would still get measles.\u00a0Before the vaccine was available, nearly\u00a0<a href=\"https:\/\/www.cdc.gov\/measles\/about\/history.html\" target=\"_blank\" rel=\"noopener\">everyone<\/a>\u00a0got measles.<\/p>\n<p>If the measles vaccine were waning quickly, as Kennedy claims, leaving a large number of people susceptible, we would see a huge number of vaccinated people getting measles. But that&#8217;s not what we are seeing. Of 561\u00a0cases identified, 550 of them are\u00a0<a href=\"https:\/\/www.dshs.texas.gov\/news-alerts\/measles-outbreak-2025\" target=\"_blank\" rel=\"noopener\">unvaccinated<\/a>, while only 11 have had only one or two vaccine doses. We know that one dose of MMR protects up to 93% of people while two doses protect up to 97% of people, and these numbers track what we&#8217;d expect if the vaccine was working as expected.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Does MMR immunity fade quickly? RFK Jr. says yes\u2014but data says no. Most measles cases are in the unvaccinated, proving the MMR vaccine offers long-lasting protection.<\/p>\n","protected":false},"parent":0,"template":"","jtf_topic_subjects":[191,203,218],"class_list":["post-12188","jtf_topics","type-jtf_topics","status-publish","hentry","jtf_topic_subjects-measles","jtf_topic_subjects-mmr","jtf_topic_subjects-vaccine-safety","entry","no-media"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/jtf_topics\/12188","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/jtf_topics"}],"about":[{"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/types\/jtf_topics"}],"version-history":[{"count":1,"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/jtf_topics\/12188\/revisions"}],"predecessor-version":[{"id":12191,"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/jtf_topics\/12188\/revisions\/12191"}],"wp:attachment":[{"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/media?parent=12188"}],"wp:term":[{"taxonomy":"jtf_topic_subjects","embeddable":true,"href":"https:\/\/www.voicesforvaccines.org\/es\/wp-json\/wp\/v2\/jtf_topic_subjects?post=12188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}