COVID Vaccines Don't Damage Placenta, May Be Safe In Pregnan
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COVID-19 vaccines may be safe during pregnancy, suggests a study that found no evidence of injury to the placenta in pregnant women who received the preventive. The first-of-its-kind study, adds to the growing literature that COVID-19 vaccines are safe in pregnancy.

The researchers noted that there is a lot of vaccine hesitancy, especially among pregnant people. The study authors examined the placentas from 84 vaccinated patients and 116 unvaccinated patients who delivered at a hospital in Chicago, US. Most patients received vaccines -- either Moderna or Pfizer -- during their third trimester.

Last year, the same team published a study that found placentas of women who tested positive for the COVID-19 virus while pregnant showed abnormal blood flow between mother and baby in utero. Pregnant patients who want to get vaccinated to avoid contracting the disease should feel safe doing so, researcher said.

In April, the scientists published a study showing pregnant women make COVID antibodies after vaccination and successfully transfer them to their foetuses. The placenta is the first organ that forms during pregnancy. It performs duties for most of the foetus' organs while they are still forming, such as providing oxygen while the lungs develop and nutrition while the gut is forming.

According to the researchers, the placenta manages hormones and the immune system, and tells the mother's body to welcome and nurture the foetus rather than reject it as a foreign intruder. The scientists also looked for abnormal blood flow between the mother and foetus and problems with foetal blood flow.

The rate of these injuries was the same in the vaccinated patients as for control patients, a researcher said. The scientists also examined the placentas for chronic histiocytic intervillositis, a complication that can happen if the placenta is infected, in this case, by SARS-CoV-2.

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