A Study on Immunity Duration Against Polio Over 18 Months Infants After 2 or 3 Primary Doses Sabin IPV in China
Clinical trial NCT04614597 · COMPLETED
Trial details
- NCT number
- NCT04614597
- Sponsor
- Centers for Disease Control and Prevention, China
- Status
- COMPLETED
- Study type
- OBSERVATIONAL
- Start date
- 2020-10-29
- Primary completion
- 2021-12-21
- Enrollment
- 774
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