Trivia: What influential vaccine was first distributed in 1955?
Scarlet fever
Smallpox
Hepatitis
Polio
The correct answer is Polio
So why is this answer correct? : Prior to the development of the polio vaccine, as many as 16,000 polio cases occurred per year, causing debilitating effects in children. By the early 1950s, American virologist Jonas E. Salk and a team of researchers were hard at work to find a vaccine. They finally released one in 1955 that all but eliminated the disease among the vaccinated.