All of the Following Are True of Poliomyelitis EXCEPT

Multiple Choice

All of the following are true of poliomyelitis EXCEPT

A) the oral polio vaccine contains attenuated strains of the virus.
B) most cases result in muscle paralysis.
C) initial sites of viral replication are the throat and small intestine.
D) infection is due to ingestion of contaminated water.
E) the majority of cases are asymptomatic.