{"id":625861,"date":"2026-01-18T23:20:51","date_gmt":"2026-01-18T22:20:51","guid":{"rendered":"https:\/\/cronologia-universale.it\/1967-20\/"},"modified":"2026-01-18T23:20:51","modified_gmt":"2026-01-18T22:20:51","slug":"september-17-1961","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/september-17-1961\/","title":{"rendered":"September 17, 1961"},"content":{"rendered":"<p>The New York Times reports the development of an effective measles vaccine by John Franklin Enders, later considered the father of modern vaccines. It helps save 120 million lives (estimate updated to the early 21st century).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The New York Times reports the development of an effective measles vaccine by John Franklin&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29],"tags":[],"class_list":["post-625861","post","type-post","status-publish","format-standard","hentry","category-as-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>September 17, 1961 - Cronologia Universale<\/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:\/\/cronologia-universale.it\/en\/september-17-1961\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"September 17, 1961 - 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