In the early 1950s, between 20,000-60,000 people a year were becoming afflicted with polio. Jonas Salk and his team at the University of Pittsburgh developed a polio vaccine in 1952. By 1955 a campaign to vaccinate children in the U.S. was launched. ALbert Sabin later developed an oral version which became the standard, In 1963, Wellbee encouraged parents to get their kids vaccinated.
