Question

Who discovered vaccine for the first time? ii. name two viral diseases which can be prevented by using vaccines. iii. what is immunity?

Answer 1

Vaccine was first discovered by Edward Jenner....
Viral diseases which can be treated by vaccines are :
- 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:

Edward Jenner discovered vaccine for the first time.  

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

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