Polio vaccines have been one of the most successful public health interventions in history, bringing the world to the brink of polio eradication. Since the introduction of effective vaccines in the 1950s and 1960s, cases of poliomyelitis have decreased by more than 99% globally. The Global Polio Eradication Initiative (GPEI), launched in 1988, has been instrumental in coordinating wor... https://www.patreon.com/posts/how-polio-course-127281941?utm_medium=clipboard_copy&utm_source=copyLink&utm_campaign=postshare_creator&utm_content=join_link