# Study of Ameliorating Effect of COVID-19 mRNA Vaccine in Individuals Immunized With Inactivated Vaccine

> **NCT04944381** · NA · UNKNOWN · sponsor: **Qihan Li** · enrollment: 112 (estimated)

## Conditions studied

- SARS-CoV-2 Acute Respiratory Disease

## Interventions

- **BIOLOGICAL:** SARS-Cov-2 mRNA vaccine immunization
- **BIOLOGICAL:** Inactivated SARS-Cov-2 vaccine immunization

## Key facts

- **NCT ID:** NCT04944381
- **Lead sponsor:** Qihan Li
- **Sponsor class:** UNKNOWN
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-07-02
- **Primary completion:** 2021-08-02
- **Final completion:** 2022-08-02
- **Target enrollment:** 112 (ESTIMATED)
- **Last updated:** 2021-06-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04944381

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04944381, "Study of Ameliorating Effect of COVID-19 mRNA Vaccine in Individuals Immunized With Inactivated Vaccine". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04944381. Licensed CC0.

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