A patient who breast-feeds her infant asks the nurse about the immunity the infant receives from breast milk. What does the nurse tell the patient about immunity through breast-feeding?
a. "The immunity protects the infant from hypersensitivity reactions."
b. "The immunity provides phagocytes to help the infant fight infections."
c. "The immunity results from the transfer of IgA through the breast milk."
d. "The immunity protects the infant from respiratory and gastrointestinal (GI) mi-crobes."
C
IgA crosses breast milk and, in the GI tract, where it is not absorbed, provides passive immunity to microbes. Infants do not receive protection from hypersensitivity reactions through breast milk. Phagocytes are not transmitted through breast milk. Infants are not protected from respiratory microbes via breast milk.
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