Can kids get COVID and routine shots on the same day? new study says maybe.

NCT ID NCT06038617

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's safe to give young children (6 months to 5 years old) their mRNA COVID-19 vaccine at the same time as other routine childhood vaccines. About 347 children took part, and researchers tracked fevers and other side effects for a week after vaccination. The goal was to see if combining shots causes more fevers than giving them separately.

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 (Pfizer or Moderna) and routine childhood vaccines (e.g., MMR, DTaP, polio)
What this could lead to: If successful, this could show that giving COVID-19 shots with other routine vaccines on the same day is safe for young children, simplifying vaccination schedules.
What could go wrong: This is a completed Phase 4 safety study with 347 children, so results are available. However, it only looked at fever and short-term side effects, not long-term safety or effectiveness.

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

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Conditions

The condition(s) this trial relates to.

Fever Seizures, Febrile

As listed by the trial registrant

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

FEVER FEVER AFTER VACCINATION SEIZURES FEVER

Contacts and locations

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Locations

Centers for Disease Control and Prevention

Atlanta, Georgia, 30333, United States
Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, 45229, United States
Columbia University

New York, New York, 10027, United States
Duke University

Durham, North Carolina, 27710, United States
Kaiser Permanente Northern California

Oakland, California, 94612, United States

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