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The antibodies that cross the placenta: how the mother's vaccine protects the baby even before birthPhoto by ClickerHappy on Pexels
Science
Medicine

The antibodies that cross the placenta: how the mother's vaccine protects the baby even before birth

BBC News Brasil14 September 2026 at 19:35

The vaccine administered during pregnancy is capable of generating antibodies that cross the placenta and protect the baby even before birth. This mechanism allows the child to receive immunity against preventable diseases right in the first months of life.

Each vaccine recommended during the gestational period has a specific time window for application throughout the pregnancy. This scheduling is not arbitrary, but rather based on scientific criteria that seek maximum effectiveness in antibody transfer to the fetus.

The text highlights that the definition of these deadlines is not a matter of simple bureaucracy, but rather an evidence-based plan regarding the best time for the mother to develop an adequate immune response and ensure the baby's protection.

Why this matters

This article is relevant for pregnant women and their families in the region, as it explains why adherence to the gestational vaccination schedule is important for protecting newborns. The information about specific application windows can influence health decisions and prenatal care, ensuring that babies receive the best possible protection even before they are born.

About this summary

This is our short summary of a report published by BBC News Brasil on 14 September 2026 at 19:35; the full text stays with the publisher. In our feed it sits under Science. We currently carry 4618 items in that section.

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