An Immunity Persistence Study of Sabin Inactivated Poliovirus Vaccine(Vero Cell) After Four Doses
Clinical trial NCT04989231 · COMPLETED
Trial details
- NCT number
- NCT04989231
- Sponsor
- Sinovac Biotech Co., Ltd
- Status
- COMPLETED
- Study type
- OBSERVATIONAL
- Start date
- 2021-09-09
- Primary completion
- 2022-12-25
- Enrollment
- 450
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