Do childhood vaccines last? 5-year follow-up study launched in china
Knowledge-focused
Not yet recruiting
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 protectio…
Sponsor: China National Biotec Group Company Limited • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC