What Happened in History: Browse Historical Facts on Kudos 365

Dr. Jonas Salk announces on a U.S. national radio show that he has successfully tested a vaccine against poliomyelitis, the virus that causes the crippling disease of polio which is known as “infant paralysis” because it mainly affects children, The first Polio epidemic in the U.S, took place in Vermont in the summer of 1894 and thousands being affected annually by the 20th century. The number of cases is 1952 were 58,000. A massive Polio Vaccine Trial Begins in U.S. More