Can toddlers get three vaccines at once? new study says yes

NCT ID NCT06442449

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

Summary

This study tested whether giving a booster polio vaccine (sIPV) at the same time as MMR and hepatitis A vaccines is safe and works well in toddlers. About 889 healthy children aged 18 to 22 months who had already received their first polio and MMR shots took part. Researchers checked immune responses and side effects 30 days after vaccination.

What this could mean

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

Active substance
Sabin strain inactivated poliovirus vaccine (sIPV), measles-mumps-rubella (MMR) vaccine, and inactivated hepatitis A (HepA-I) vaccine
What this could lead to
If successful, this could show that giving these booster vaccines together is safe and effective, simplifying childhood immunization schedules.
What could go wrong
This is a completed Phase 4 trial, so results are already known. The main risk is that co-administration might lower immune response or increase side effects compared to separate shots.

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.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Jiangsu Center for Disease Control and Prevention (Jiangsu Institute of Public Health)

    Nanjing, Jiangsu, 210009, China

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Other studies related to the condition(s) this trial covers.