Pregnant women get both COVID and flu shots at once in new safety study

NCT ID NCT06503900

Completed Knowledge-focused Sponsor: Duke University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether it is safe for pregnant women to receive the mRNA COVID-19 vaccine and the flu shot at the same time versus a few weeks apart. 98 pregnant women were randomly assigned to one of the two schedules. Researchers tracked side effects, pregnancy outcomes, and baby health through delivery and 90 days after birth. The goal was to see if giving both vaccines together causes more problems than spacing them out.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: mRNA COVID-19 vaccine and inactivated influenza vaccine
What this could lead to: If successful, this could show that getting both vaccines at the same time is as safe as getting them separately during pregnancy, simplifying vaccination schedules.
What could go wrong: This is a small, completed trial with only 98 participants, so results may not apply to all pregnant women. It focuses on safety, not long-term effectiveness.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ADVERSE EVENT FOLLOWING IMMUNIZATION BIRTH OUTCOMES SAFETY

Contacts and locations

Locations

Boston Medical Center

Boston, Massachusetts, 02118, United States
Centers for Disease Control and Prevention

Atlanta, Georgia, 30341, United States
Duke University

Durham, North Carolina, 27710, United States
Elizabeth Schlaudecker

Cincinnati, Ohio, 45229, United States
Emory University

Atlanta, Georgia, 30322, United States
Wake Forest University

Winston-Salem, North Carolina, 27101, United States

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