Question

After infection of microbes, the immunity acquired is known as

• A. Active immunity
• B. Passive immunity
• C. Natural immunity
• D. Both A and B

Answer 1

The correct option is A Active immunity

Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response.

Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen. A vaccine stimulates a primary response against the antigen without causing symptoms of the disease.

So, the correct answer is option A.