Diseases & National Health Programme
Chronic carrier state is seen in all except
Measles virus has only one serotype
a. It can't survive outside the human body for any length of time
b. Only source of infection is a case of measles. "CARRIERS are not known to Occur".
c. Measles is highly infectious during the prodromal period and at the time of appearance of rash.
The communicability is approx 4 days before to 5 days after the appearance of rash