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Birth defects

Covid-19 Infection and Vaccination in Pregnancy Not Associated with Increased Risk of Birth Defects

Strategic Insights

— 1 min read

Pregnant women who contract Covid-19 or receive the vaccine during the first trimester do not face a heightened risk of major birth defects, according to a new Scandinavian study published in The BMJ. The research involved a large dataset of over 343,000 live births in Sweden, Denmark, and Norway between 2020 and 2022. While Covid-19 has been linked to severe illnesses and complications during pregnancy, this study aimed to clarify the risks associated with birth defects after infection or vaccination.

Key Takeaways:

  • The study analyzed 343,066 liveborn single infants in Sweden, Denmark, and Norway with an estimated start of pregnancy between March 1, 2020, and February 14, 2022.
  • Researchers found no increased risk of major congenital anomalies after Covid-19 infection or vaccination during the first trimester among 152,261 infants.
  • The study controlled for factors such as mother's age, education, country of birth, weight, chronic conditions, and smoking during pregnancy.
  • A total of 17,704 infants (5.2%) were diagnosed with a major congenital anomaly, but the researchers found no heightened risk due to Covid-19 infection or vaccination.
  • The study supported the safety of vaccination for pregnant women, with no notable increased risk among offspring of women vaccinated against Covid-19 during the first trimester.

Statistics:

  • 343,066 liveborn single infants were included in the study, with an estimated start of pregnancy between March 1, 2020, and February 14, 2022.
  • 10,229 infants (3%) were exposed to Covid-19 infection during the first trimester.
  • 29,135 infants (19%) were exposed to Covid-19 vaccination during the first trimester.
  • 7,204 (5.2%) of infants were diagnosed with a major congenital anomaly.
  • 10 of the 11 groups of anomalies evaluated showed no notable increased risk among offspring of women vaccinated against Covid-19 during the first trimester.

Sources:

  • "Risk of congenital anomalies after Covid-19 infection or vaccination during pregnancy: a study of over 343,000 births" (published by The BMJ)
  • HT Digital Content Services ( permission from HT Mumbai)

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