Birth defects research · 2025
COVID-19 Vaccination During Pregnancy and Birth Defects: Results From the CDC COVID-19 Vaccine Pregnancy Registry, United States 2021-2022.
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Sharma Andrea J, Reefhuis Jennita, Zauche Lauren Head, Madni Sabrina A, Cragan Janet D, Moore Cynthia A, Nahabedian John F, Olson Christine K, CDC COVID‐19 Vaccine Pregnancy Registry team
Аннотация
BACKGROUND: We calculated prevalences of birth defects among infants of participants in the Centers for Disease Control and Prevention's (CDC) COVID-19 Vaccine Pregnancy Registry (C19VPR).
METHODS: C19VPR enrolled women receiving COVID-19 vaccines ≤ 30 days before the last menstrual period or during pregnancy from December 2020 through June 2021. We included 19,931 participants with singleton pregnancies ending ≥ 20 weeks' gestation who did not report COVID-19 illness during pregnancy. Clinicians identified birth defects from participant-reported infant health information up to 4 months after birth. We compared C19VPR birth defect prevalences to published pre-pandemic estimates. For seven defects originating during embryogenesis (cleft lip with/without cleft palate, atrial septal defect, coarctation of the aorta, ventricular septal defect, esophageal atresia or stenosis, hypospadias, kidney agenesis/hypoplasia/dysplasia), we estimated prevalence ratios comparing those vaccinated < 14 weeks' to those vaccinated ≥ 14 weeks' gestation.
RESULTS: Participants reported receiving Pfizer-BioNTech vaccines (59.0%), Moderna (38.2%), and Janssen (2.8%) vaccines. Most (65.2%) participants received their first COVID-19 vaccine after the first trimester. The prevalence of major birth defects was 3.8%. Among defects with comparator estimates available (n = 50), 35 were below or within expected ranges. C19VPR prevalences were higher than the comparator confidence interval for 15 defects; however, C19VPR confidence intervals included comparator estimates. Prevalences did not differ by the timing of vaccination for seven defects examined.
CONCLUSIONS: Birth defects prevalence estimates among infants born to women receiving COVID-19 vaccines during or just prior to pregnancy were generally similar to pre-pandemic estimates. While there was no strong evidence of associations between vaccination and specific defects, statistical power was low.
METHODS: C19VPR enrolled women receiving COVID-19 vaccines ≤ 30 days before the last menstrual period or during pregnancy from December 2020 through June 2021. We included 19,931 participants with singleton pregnancies ending ≥ 20 weeks' gestation who did not report COVID-19 illness during pregnancy. Clinicians identified birth defects from participant-reported infant health information up to 4 months after birth. We compared C19VPR birth defect prevalences to published pre-pandemic estimates. For seven defects originating during embryogenesis (cleft lip with/without cleft palate, atrial septal defect, coarctation of the aorta, ventricular septal defect, esophageal atresia or stenosis, hypospadias, kidney agenesis/hypoplasia/dysplasia), we estimated prevalence ratios comparing those vaccinated < 14 weeks' to those vaccinated ≥ 14 weeks' gestation.
RESULTS: Participants reported receiving Pfizer-BioNTech vaccines (59.0%), Moderna (38.2%), and Janssen (2.8%) vaccines. Most (65.2%) participants received their first COVID-19 vaccine after the first trimester. The prevalence of major birth defects was 3.8%. Among defects with comparator estimates available (n = 50), 35 were below or within expected ranges. C19VPR prevalences were higher than the comparator confidence interval for 15 defects; however, C19VPR confidence intervals included comparator estimates. Prevalences did not differ by the timing of vaccination for seven defects examined.
CONCLUSIONS: Birth defects prevalence estimates among infants born to women receiving COVID-19 vaccines during or just prior to pregnancy were generally similar to pre-pandemic estimates. While there was no strong evidence of associations between vaccination and specific defects, statistical power was low.