Question

Vaccine against polio viruses is an example of -

• A. Active immunization
• B. Passive immunization
• C. Auto-immunization
• D. Simple immunization

Answer 1

The correct option is A Active immunization

When a host is exposed to antigens, which may be in the form of living or dead microbes or other proteins antibodies are produced in the host body. This type of immunity is called active immunity. Infecting the microbes deliberately during immunization/vaccination induces active immunity example, polio vaccine.
Autoimmunization is the system of immune response against own body cells and tissues.
Passive immunization is transfer of ready made antibodies in the body of the individual.

So, the correct answer is- active immunization.