Question

(a) How do children in many parts of India get immune to Hepatitis
'A' by the time they are 5 year old ?
(b) Pinky suffered from chickenpox last month. Her grandmother
told her that now she would not suffer from this disease again. What is
the reason for such a saying?​

Answer 1

Answer:

The answer to both of these questions are vaccines.

Explanation:

The children are given vaccine at a specific age to get immunity against certain diseases.

(a) By the time they are 5 years old, children are given vaccines for the disease Hepatitis 'A'.

(b)The vaccine for chicken pox does not mean that no one will have chicken pox for the rest of their life. If Pinky has got chicken pox even though she has taken the vaccine, it means that the success rate of being immune to this disease is less in her body.