# Effectiveness of the Adsorbed Vaccine COVID-19 (Coronavac) Among Education and Public Safety Workers With Risk Factors for Severity

> **NCT04789356** · PHASE4 · UNKNOWN · sponsor: **Fundação de Medicina Tropical Dr. Heitor Vieira Dourado** · enrollment: 6233 (actual)

## Conditions studied

- Covid19

## Interventions

- **BIOLOGICAL:** Adsorbed SARS-CoV-2 (inactivated) vaccine

## Key facts

- **NCT ID:** NCT04789356
- **Lead sponsor:** Fundação de Medicina Tropical Dr. Heitor Vieira Dourado
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-03-18
- **Primary completion:** 2021-07-05
- **Final completion:** 2022-03
- **Target enrollment:** 6233 (ACTUAL)
- **Last updated:** 2021-07-26

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04789356

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04789356, "Effectiveness of the Adsorbed Vaccine COVID-19 (Coronavac) Among Education and Public Safety Workers With Risk Factors for Severity". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT04789356. Licensed CC0.

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