Question

Naturally acquired active immunity would be most likely acquired through which of the following processes?
a. vaccination
b. drinking colostrum
c. natural birth
d. infection with disease causing ​

Answer 1

• You have to know only the definition of naturally acquired active immunity. Naturally acquired active immunity is produced when the person is exposed to infectious agent.

Answer 2

Naturally acquired active immunity would be most likely acquired through infection with disease-causing organisms. (option - d)

• Among the given options, vaccination and infection with disease-causing organisms are types of active immunity.
• Active immunity is the immunity elicited by the entry of a natural pathogen. The immune system's T-cells recognize the pathogen and activate B cells to produce specific antibodies.
• This also generates memory cells for intensified rapid response when the same pathogen enters the second time.
• Vaccination is a type of artificial active immunity as it involves the use of a weakened pathogen artificially infused in the body to generate memory against the pathogen.
• Drinking colostrum and natural birth provide Passive Immunity - IgG and IgA antibodies acquired by the baby from the mother.