1media/Albert_Sabin_thumb.jpg2024-07-18T22:37:29+00:00Ivan Portillo741ad6f42573dbb784db9511d4627772eb86aa193673Albert Sabin, a Polish-American medical researcher, introduced a live attenuated oral poliovirus vaccine, which provided a more practical and effective immunization against polio. This oral vaccine became widely used and contributed to nearly eradicating polio globally. Other live attenuated vaccines followed, including those for measles (1963), mumps (1967), rubella (1969), varicella (1995), and rotavirus (2008). Image Attribution: Bobak at the English Wikipedia, Public domain, via Wikimedia Commonsplain2024-07-19T16:49:04+00:001961Ivan Portillo741ad6f42573dbb784db9511d4627772eb86aa19