Though rare, Covid during pregnancy can increase a woman's risk of stillbirth.
,” he said. “It’s not the fetus that is being attacked and destroyed by the virus. It’s the placenta.”
It consists of three factors: A build up of a protein called fibrin, which causes clotting in the organ’s delicate vascular system; the death of cells in the protective cell layer of the placenta; and unusual inflammation in the placenta. Fibrin deposition can occur in completely normal, uncomplicated pregnancies, said Dr. Kjersti Aagaard, a professor of maternal-fetal medicine at Baylor College of Medicine and Texas Children’s Hospital who was not involved in the new study. “But what you don’t see is three-quarters of the placenta filled with these. No fetus can survive that.”Pregnant people are naturally more susceptible to infection because pregnancy weakens the immune system to keep a person’s body from attacking the fetus.
According to Schwartz, early research suggests SARS-CoV-2 placentitis happens over a period of days up to two weeks. Obstetricians are now being advised to perform third-trimester ultrasounds on women who have been infected with Covid during pregnancy to screen for warning signs that could endanger the baby.
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