All are false regarding polio virus except:
Ans. (b) Inactivated vaccine is given IM Inactivated poliovaccine or IPV (salk type) is given subcutaneously or IM. Other options Option L. Most cases of polio are asymptomatic Option c Dose schedule of IPV: First dose when infant is 6 weeks old Additional doses are recommended prior to school entry and then every five years until the age of 18. Option d These are three serotypes of polio virus Most outbreaks of paralytic polio are due to type 1.
Most cases are symptomatic
Inactivated vaccine given IM
Inactivated polio vaccines are given to child less than 3 years of age
Only one type exists