Why is it important for newborns to receive maternal antibodies?

Receiving maternal antibodies is crucial for newborns primarily because it helps establish their immune system. Newborns are born with an immature immune response, making them particularly vulnerable to infections and diseases during their early days and weeks. Maternal antibodies, primarily immunoglobulin G (IgG), are passed from mother to baby during pregnancy and shortly after birth through breastmilk, especially colostrum, which is rich in antibodies.

These maternal antibodies provide passive immunity to the newborn, offering immediate, short-term protection against pathogens that the mother has already encountered or been vaccinated against. This protection is essential until the infant's own immune system matures and starts producing its own antibodies in response to infections and vaccinations. This immune boost helps reduce the risk of infections, which is crucial for the overall health and survival of the newborn.

While breastfeeding (mentioned in another choice) does support the transfer of these antibodies and provides essential nutrients, the fundamental importance is the role they play in bolstering the infant’s immune defense during a vulnerable stage of life.