Question

Who discovered vaccine first time name any two diseases which can be prevented by vaccine

Answer 1

Edward Jenner discovered vaccine.
(b) Viral diseases prevented by vaccines - Hepatitis A, Polio, Chickenpox.
Immunity means the resistance of the body to a disease. It is due to the presence of antibodies in our body for the disease causing microorganisms known as antigens. When these antigens enter our body, antibodies are formed which prevent the disease.

Answer 2

Answer:

HERE U GO...

Edward Jenner discovered vaccine for the first time.  

Two diseases which can be prevented by vaccines are tuberculosis and diphtheria.  

:)