What is vaccine

What is vaccination?

What is vaccination ?

What is vaccination (immunization=innoculation).

What is vaccination ? Who gave this idea ?

What is vaccination or Immunisation? Name some diseases which can be prevented by Vaccinations.

What is vaccination ? Mention the four ways in which vaccines are prepared, giving the name I of one disease for which each type of vaccine is used.

What is Vaccination and Immunisation ?

What is a vaccine.?

What is a vaccine :

What is a vaccine?