Question

Artificial immunity can be acquired from -

• A. Serious illness
• B. Repeated exposure to the same microbe
• C. Treatment with penicillin
• D. Vaccination

Answer 1

The correct option is D Vaccination

Artificially acquired active immunity is protection produced by intentional exposure of a person to antigens in a vaccine, so as to produce an active and lasting immune response.
So, it is acquired by vaccination. Vaccines contain the antigen which contains live pathogens. Thus, they provide primary immune response.

So, the correct answer is-vaccination.