A–Z Glossary

Maternal antibodies

Antibodies made by the pregnant person that can cross the placenta and help protect the baby.

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Vaccinations during pregnancy overview

Vaccinations during pregnancy overview

Why vaccination matters in pregnancy Pregnancy changes immune function, cardiopulmonary demand, and the stakes of an otherwise routine infection. A respiratory virus, for example, may lead to more severe maternal illness, more clinic visits, dehydration, fever, or hospitalization than it would outside pregnancy. Preventing that illness is valuable in its own right, because maternal stability […]