1.

Describe in detail the concept of vaccines. Name four diseases which vaccines are available in the market.

Answer»

(i) Vaccines is a product in the form of weakened or inactivated pathogens or proteins which are used to provide protection against a disease.
(ii) (a) Polio, (b) Hepatitis, (c) Measles, (d) Small-pox, (e) Diphtheria, (J) Tetanus, (g) Whooping cough, etc.



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