# A Study of Booster Immunization With COVID-19 Vaccine,Inactivated Co -Administration With Influenza Vaccine and Pneumococcal Polysaccharide Vaccine

> **NCT05499351** · PHASE4 · COMPLETED · sponsor: **Sinovac Biotech Co., Ltd** · enrollment: 3000 (actual)

## Conditions studied

- COVID-19

## Interventions

- **BIOLOGICAL:** Adult group in immunogenicity and safety study of combined immunization
- **BIOLOGICAL:** Elderly group in immunogenicity and safety study of combined immunization
- **BIOLOGICAL:** Adult group in safety observation study of combined immunization
- **BIOLOGICAL:** Elderly group in safety observation study of combined immunization

## Key facts

- **NCT ID:** NCT05499351
- **Lead sponsor:** Sinovac Biotech Co., Ltd
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-10-15
- **Primary completion:** 2021-12-05
- **Final completion:** 2022-05-05
- **Target enrollment:** 3000 (ACTUAL)
- **Last updated:** 2022-08-12


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05499351

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05499351, "A Study of Booster Immunization With COVID-19 Vaccine,Inactivated Co -Administration With Influenza Vaccine and Pneumococcal Polysaccharide Vaccine". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT05499351. Licensed CC0.

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