Question

IgA immunity provided to a baby at birth is called:

• A. Active immunity
• B. Passive immunity
• C. Artificial immunity
• D. Innate immunity

Hint:

\[ \boxed{\text{Mother → Baby antibodies = Passive immunity}} \] IgA in colostrum provides temporary protection to newborns.

Answer 1

The Correct Option is B

IgA antibodies present in the mother's colostrum and breast milk confer naturally acquired passive immunity to the newborn. This transferred immunity protects the infant against gastrointestinal and respiratory pathogens during early life when the baby's own immune system is not yet fully developed.