Epidemic Paralytic Polio

Multiple Choice

Epidemic paralytic polio:

A) was more likely when newborns were exposed to the virus.
B) was more likely when exposure was delayed beyond infancy.
C) was most commonly seen in situations where sanitation was poor.
D) was eradicated in the United States as routine sanitation became commonplace.
E) has not been observed since the 19^th century in developed countries.