The poliovirus, which caused major epidemics in Europe and the United States from late Victorian times until the development of the first effective vaccine in 1952, could not be reached for comment—having been at last eradicated from the Americas in 1994. https://t.co/MDvZkTlDSE https://t.co/MHIV9mKhyE— southpaw (@nycsouthpaw) May 8, 2020