JAMA NetworkSpontaneous Abortion Following COVID-19 Vaccination During Pregnancy

Publication: JAMA
Method: Electronic health record (EHR) data from 8 health systems over seven 4-week surveillance periods to identify and assign gestational ages for spontaneous abortions and ongoing pregnancies; analyzed and compared odds of receiving a COVID-19 vaccine in the 28 days prior to spontaneous abortion and ongoing pregnancies.
Results: Of 105,446 unique pregnancies, 13,160 spontaneous abortions and 92,286 ongoing pregnancies were identified; spontaneous abortions did not have an increased odds of exposure to a COVID-19 vaccination in the prior 28 days compared with ongoing pregnancies.