# Community-based Sero-epidemiological Study of COVID-19

> **NCT05599555** · — · COMPLETED · sponsor: **The University of Hong Kong** · enrollment: 9600 (actual)

## Conditions studied

- COVID-19

## Interventions

- **BIOLOGICAL:** mRNA BNT162b2 vaccine
- **BIOLOGICAL:** CoronaVac vaccine

## Key facts

- **NCT ID:** NCT05599555
- **Lead sponsor:** The University of Hong Kong
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2022-04-28
- **Primary completion:** 2022-12-31
- **Final completion:** 2023-03-31
- **Target enrollment:** 9600 (ACTUAL)
- **Last updated:** 2024-12-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05599555

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05599555, "Community-based Sero-epidemiological Study of COVID-19". Retrieved via AI Analytics 2026-06-05 from https://api.ai-analytics.org/clinical/NCT05599555. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*