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Not yet recruiting 1 Completed 1

Do kids still have vaccine protection 5 years later?

Knowledge-focused Not yet recruiting

This study looks at 600 Chinese children to see if they still have antibodies against polio, measles, mumps, rubella, and hepatitis A five years after getting their routine vaccines. The goal is to measure how long protection lasts, not to test a new treatment. Results will help …

Matched conditions: POLIO

Sponsor: China National Biotec Group Company Limited • Aim: Knowledge-focused

Last updated May 17, 2026 09:48 UTC

POLIO

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Do kids still have vaccine protection 5 years later?