True or False : Chicken pox is a communicable disease.
Assertion (A) : Cancer is a non communicable disease. Reason (R) : There are different factors responsible for occurrence of cancer.
Assertion (A) : Antibiotics do not help to cure communicable diseases. Reason (R) : They are caused by microbes.
Assertion : Colon bacilli can be used to produce glycoproteins that can be used fot hepatitis B treatment Reason : Hepatitis B is a viral disease and its spread in the body can be checked using interferons.
In the case of certain diseases like mumps, measles and chicken pox, the secondary immune response gives a life long immunity. Give the scientific reason behind this.
NCERT TAMIL-HEALTH AND HYGIENE-Evaluation (Choose the correct alternative from the following.)