Write a note on artificial acquired active immunity.

Explanation

(iii) Artificial acquired active immunity : This immunity is acquired artificially by vaccination. Vaccines contain dead or live but attenuated (artificially weakened) pathogens or toxoids consisting of microbial components or toxins secreted by the pathogens. Vaccine is introduced into the body to stimulate the formation of antibodies by the immune system. Example : Polio vaccine is available which prevents from poliomyelitis,