Moderna, Pfizer vaccines safe during pregnancy, study finds

There's no evidence to suggest that the Pfizer and Moderna COVID-19 vaccines pose risk during pregnancy, according to a preliminary report from researchers at the Centers for Disease Control and Prevention. The results are part of the biggest study yet on COVID-19 vaccine safety among pregnant people.

The peer-reviewed paper published Wednesday by The New England Journal of Medicine used self-reported data from more than 35,691 people who were either pregnant or soon to become pregnant. After getting the shot, they reported typical vaccine side effects — pain at the injection site, fatigue, headaches and muscle aches — but researchers say the data "did not show obvious safety signals." The study noted the findings were preliminary and only covered the first 11 weeks of the U.S. vaccine rollout, between December 14, 2020, and February 28, 2021. The results published this week were an extension of a study presented by the CDC's Advisory Committee on Immunization Practices last month, which also found no safety concerns during pregnancy.