Which of the Following is a Secondary Immunodeficiency

Question

Which of the following is a secondary immunodeficiency?
A)Severe combined immunodeficiency.
B)AIDS.
C)Selective IgA deficiency.
D)DiGeorge syndrome.
E)All of the above.

Accepted Answer

Secondary immunodeficiency refers to an acquired deficiency in the immune system, as opposed to a primary immunodeficiency that is present from birth. AIDS is an example of a secondary immunodeficiency as it is caused by an infection (HIV) that weakens the immune system. Severe combined immunodeficiency (A), selective IgA deficiency (C), and DiGeorge syndrome (D) are all examples of primary immunodeficiencies.