In the 1940s, Americans feared being infected with the polio virus. How did the polio vaccine impact the health of the population? a It stopped people from coming into contact with the polio virus b It stopped the polio virus from spreading and making people sick. It changed the polio virus into a form that made it less contagious. d It changed the polio virus into a form that did not make people sick.
b. It stopped the polio virus from spreading and making people sick. The polio vaccine was developed in the 1950s, and it effectively halted the spread of the polio virus and prevented people from getting sick. This led to a significant improvement in public health, as the incidence of polio decreased dramatically.
