Immunogenicity and Safety of a Third Dose and Immune Persistence of BBIBP-Corv Vaccine in Elderly People With Chronic Bronchitis and COPD
Clinical trial NCT05104216 · UNKNOWN
Trial details
- NCT number
- NCT05104216
- Sponsor
- China National Biotec Group Company Limited
- Status
- UNKNOWN
- Phase
- Phase 4
- Study type
- INTERVENTIONAL
- Start date
- 2021-12-01
- Primary completion
- 2022-06-30
- Enrollment
- 400
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