COVID Vaccine in Pregnancy: Link to Development?  - Report - MDSpire

COVID Vaccine in Pregnancy: Link to Development? 

  • By

  • Kerri Miller

  • February 20, 2026

  • 2 min

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Clinical Report: COVID Vaccine in Pregnancy: Link to Development?

Overview

A multicenter study found no significant differences in neurodevelopmental outcomes between children born to mothers who received mRNA COVID-19 vaccines during or before pregnancy and those who were unvaccinated. The findings support the safety of mRNA vaccination in pregnancy.

Background

Vaccination during pregnancy is crucial for protecting both mothers and infants from preventable diseases like COVID-19. Despite the importance of maternal immunization, vaccine hesitancy and exclusion from clinical trials have limited vaccination rates among pregnant individuals. Understanding the safety and efficacy of COVID-19 vaccines in this population is essential for public health.

Data Highlights

GroupTotal ASQ ScoreMedian Age at Assessment (months)
Exposed (Vaccinated)25525.4
Unexposed (Unvaccinated)26025.9

Key Findings

  • No significant differences in total ASQ scores between exposed and unexposed groups.
  • Prespecified equivalence margin of 10 points was met, indicating safety of vaccination.
  • Domain-specific ASQ-3 scores were comparable across communication, gross motor, fine motor, problem solving, and personal-social domains.
  • Secondary outcomes, including Child Behavior Checklist scores, showed no meaningful differences.
  • Exposed mothers were more likely to be nulliparous, with children slightly younger at assessment.

Clinical Implications

Healthcare providers can reassure pregnant patients regarding the safety of mRNA COVID-19 vaccination, as it does not adversely affect neurodevelopmental outcomes in children. Continued support for vaccination during pregnancy is essential to enhance maternal and infant health.

Conclusion

The study provides important evidence supporting the safety of mRNA COVID-19 vaccines in pregnancy, alleviating concerns about potential negative impacts on child development.

References

  1. The Journal of Infectious Diseases, Maternal Immunization, 2023 -- Maternal Immunization
  2. Drug Safety, Evaluating the Safety and Efficacy of COVID-19 Vaccination in Pregnant Individuals: An Ongoing Systematic Review and Meta-Analysis, 2024
  3. Drug Safety, Evaluation of Adverse Events in Pregnant Individuals Following COVID-19 and Influenza Vaccination: A Disproportionality Analysis Utilizing Combined US VAERS and EudraVigilance Data, 2025
  4. Drug Safety, Assessing the Use of Medical Insurance Claims and Electronic Health Records to Measure COVID-19 Vaccination During Pregnancy, 2025
  5. COVID-19 Vaccines and Pregnancy: Conversation Guide for Clinicians | ACOG, 2026
  6. Neonatal Outcomes After COVID-19 Vaccination in Pregnancy | Vaccination | JAMA | JAMA Network, 2023
  7. No Association Between mRNA COVID-19 Vaccination During Pregnancy and Autism in Children - Society for Maternal-Fetal Medicine, 2023
  8. COVID-19 Vaccines and Pregnancy: Conversation Guide for Clinicians | ACOG
  9. Neonatal Outcomes After COVID-19 Vaccination in Pregnancy | Vaccination | JAMA | JAMA Network
  10. No Association Between mRNA COVID-19 Vaccination During Pregnancy and Autism in Children - Society for Maternal-Fetal Medicine

Original Source(s)

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