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Maternal Newborn Nursing Certification Practice Test

Category - Infections

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The baby’s immune system is not fully developed until:

The third trimester.
Four weeks after birth.
Six months after birth.
At one year of age.

Explanation

Answer: C - The baby’s immune system is not fully developed until the baby is about 6 months of age. Until then, natural passive immunity is provided by the IgG from the mother’s bloodstream through the placenta and to the fetus. This level is maintained for several months after birth.

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