Question

Passive immunity is defined as immunity

• A. inherited from the parents
• B. achieved through vaccination
• C. acquired through first exposure to the disease
• D. achieved through the sera of other animals enriched in antibodies

Answer 1

The Correct Option is D

Passive immunity is defined as immunity achieved through the sera of other animals enriched in antibodies. It is resistance, based on antibodies preformed in another host. Administration of antibody against diphtheria, tetanus, botulism etc. makes large amounts of antitoxin immediately available to neutralize the toxins. The main advantage of this is the prompt availibility of large amount of antibody. E.g., tetanus, rabies, hepatitis etc.