Do childhood vaccines last? 5-year follow-up study launched in china

NCT ID NCT07338851

Not yet recruiting Knowledge-focused Sponsor: China National Biotec Group Company Limited Source: ClinicalTrials.gov ↗

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

Summary

This study follows 600 Chinese children who received standard vaccines against polio, measles, mumps, rubella, and hepatitis A. Researchers will test their blood to see if protective antibodies remain 5 years after vaccination. The goal is to understand how long vaccine protection lasts in real-world conditions.

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, combined live attenuated measles, mumps and rubella vaccine, and freeze-dried live attenuated hepatitis A vaccine
What this could lead to: If successful, this study could confirm that these vaccines provide long-lasting protection, supporting current vaccination schedules.
What could go wrong: This is an observational follow-up study, not testing a new treatment. Results may show waning immunity over time, and findings may not apply to other populations.

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.

hepatitis A virus infection measles mumps infectious disease poliomyelitis rubella

As listed by the trial registrant

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

HEPATITIS A MEASLES MUMPS POLIO RUBELLA

Contacts and locations

Locations

Chenggu County Center for Disease Control and Prevention

Hanzhong, Shaanxi, China
Feixiang District Center for Disease Control and Prevention

Handan, Hebei, China
Jiangyou Center for Disease Control and Prevention

Mianyang, Sichuan, China
Sheyang County Center for Disease Control and Prevention

Yancheng, Jiangsu, China
Si County Center for Disease Control and Prevention

Suzhou, Anhui, China
Yanhu District Center for Disease Control and Prevention

Yuncheng, Shanxi, China

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