What is vaccine ?

What is a vaccine.?

What is a vaccine :

What is a vaccine?

What is a vaccine? Give advantages of oral vaccines or edible vaccines.

What is a vaccine? Give one example of a vaccine produced by recombinant DNA technique.

What is a vaccine ? How do they act to provide long term immunity to an individual who is vaccinated ?

What is a vaccine ? How do they act to provide long term immunity to an individual who is vaccinated ?

Answer the given question orally : Why are infants vaccinated according to a fixed time schedule? What is a vaccine?