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Recent research reinforces the safety of COVID vaccines for pregnant individuals. As scientists continue to explore the effects of COVID-19 vaccines on populations initially left out of clinical trials, such as children and pregnant people, new findings are emerging. For instance, in February, it was discovered that antibodies from COVID-19 vaccines can be transferred to fetuses in utero. Additionally, just this week, the FDA authorized the Pfizer vaccine for children aged 12 to 15 after it was tested in this age group.
A recent study published in JAMA reveals that COVID-19 vaccines can offer protective benefits to pregnant women and their infants. Released on May 13, the study titled “Immunogenicity of COVID-19 mRNA Vaccines in Pregnant and Lactating Women” indicates that vaccinated women can transmit protective antibodies to their babies both through the bloodstream and breast milk. It further suggests that the Pfizer-BioNTech and Moderna vaccines elicit immune responses in pregnant and lactating women, potentially guarding against certain coronavirus variants. “Vaccination of pregnant individuals actually leads to the transfer of some immunity to their newborns,” explains Dr. Maya Johnson, a physician-scientist and co-author of the study.
Another study published in Obstetrics & Gynecology found no evidence that the Pfizer or Moderna vaccines harm the placenta during pregnancy. The research also indicates that these vaccines do not affect fertility, menstrual cycles, or puberty. “We can shift our perspective from protecting pregnant individuals from the vaccine to protecting them and their infants through vaccination,” states Dr. Rachel Thompson, a co-author of the placenta study. “This is a significant shift.”
The JAMA study analyzed 103 women who received either the Pfizer or Moderna vaccine between December 2020 and March 2021. Of these, 30 were pregnant, 16 were lactating, and 57 were neither. For the placenta study, researchers examined placentas from 200 women who gave birth between April 2020 and April 2021, with 84 of them having received either vaccine during pregnancy. “We don’t see any signs indicating that the placenta is harmed by the vaccine,” Thompson tells the Chicago Tribune. “This adds to rapidly growing evidence showing that the vaccine is safe during pregnancy.”
“Overall, this is encouraging news,” says Dr. Liam Carter, a virologist and study co-author. “It strengthens the case that there are substantial benefits for pregnant individuals to get vaccinated.”
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Summary:
Recent studies confirm that COVID-19 vaccines, such as those from Pfizer and Moderna, are safe for pregnant individuals, showing no adverse effects on pregnancy, fertility, or the placenta. Vaccinated women can pass protective antibodies to their infants, enhancing safety for both mother and child.