When should the RSV vaccine be given during pregnancy?

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Multiple Choice

When should the RSV vaccine be given during pregnancy?

Explanation:
Maternal vaccination for RSV aims to maximize antibodies passed to the baby before birth. The placenta transports IgG most efficiently in the later stages of pregnancy, so vaccinating in the 32-36 week window gives enough time for the mother to produce high antibody levels and for those antibodies to cross to the fetus before delivery. Vaccinating earlier yields less transfer to the newborn, while vaccinating later may not allow sufficient time for transfer if delivery happens soon after. Therefore, 32-36 weeks is the optimal period to protect the newborn with maternal antibodies.

Maternal vaccination for RSV aims to maximize antibodies passed to the baby before birth. The placenta transports IgG most efficiently in the later stages of pregnancy, so vaccinating in the 32-36 week window gives enough time for the mother to produce high antibody levels and for those antibodies to cross to the fetus before delivery. Vaccinating earlier yields less transfer to the newborn, while vaccinating later may not allow sufficient time for transfer if delivery happens soon after. Therefore, 32-36 weeks is the optimal period to protect the newborn with maternal antibodies.

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