Question

Which statement correctly describes Severe Combined Immunodeficiency (SCID)?

Options

• It is a secondary or acquired immunodeficiency disorder caused by HIV.

• It is a primary immunodeficiency disorder present from birth.

• It is associated mainly with T-cell deficiency caused by defective development or absence of the thymus.

• It is a congenital disorder in which B-cell function is deficient while T-cell activity remains relatively normal.

Answer 1

SCID is a primary immunodeficiency disorder and is present from birth. Its congenital nature distinguishes it from AIDS, which is secondary or acquired.