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Now, a new study adds evidence to support that advice.
"Getting vaccinated against COVID-19 is important for preventing severe illness in pregnant people," said study author Dr. Heather Lipkind, an associate professor of obstetrics, gynecology and reproductive sciences at the Yale School of Medicine.
For the new study, Lipkind's team used data from eight health care organizations participating in Vaccine Safety Datalink, a project established by the U.S. Centers for Disease Control and Prevention to monitor vaccine safety. Researchers looked at more than 46,000 pregnant women.
More than 98% of the women who had received the vaccines did so during the second or third trimester of pregnancy. About 1.7% received their vaccines in the first trimester. A majority were vaccinated with the shots developed by Pfizer or Moderna.
Preterm birth, in which babies are delivered earlier than 37 weeks, and being small for gestational age have been associated with a higher risk for infant death and disability.
The trimester when the vaccination was received and the number of COVID-19 vaccine doses received were also not associated with increased risk of preterm birth or with the infant being small for gestational age, the study found.
Despite the recommendation to get vaccinated, only 31% of pregnant women had received vaccines as of September. So far, research has shown that their most common concerns have been a lack of information about COVID-19 vaccine safety in pregnancy and potential harm to the fetus.
Meanwhile, pregnant women are considered a high-risk group in terms of the impact of COVID-19. They have an increased risk of severe disease and death and are more likely to require admission into the intensive care unit, invasive ventilation and machine-assisted blood oxygenation.
The findings were reported Jan. 4 in the CDC publication Morbidity and Mortality Weekly Report. The CDC and the American College of Obstetricians and Gynecologists both recommend the COVID-19 vaccine for women who are pregnant, breastfeeding, trying to get pregnant, or might become pregnant in the future.
SOURCE: Yale University, news release, Jan. 4, 2022
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