# Chloroquine/ Hydroxychloroquine Prevention of Coronavirus Disease (COVID-19) in the Healthcare Setting

> **NCT04303507** · NA · COMPLETED · sponsor: **University of Oxford** · enrollment: 4652 (actual)

## Conditions studied

- COVID19
- Coronavirus
- Acute Respiratory Illnesses

## Interventions

- **DRUG:** Chloroquine or Hydroxychloroquine
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT04303507
- **Lead sponsor:** University of Oxford
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-04-29
- **Primary completion:** 2022-03-22
- **Final completion:** 2022-03-22
- **Target enrollment:** 4652 (ACTUAL)
- **Last updated:** 2023-04-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04303507

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04303507, "Chloroquine/ Hydroxychloroquine Prevention of Coronavirus Disease (COVID-19) in the Healthcare Setting". Retrieved via AI Analytics 2026-07-15 from https://api.ai-analytics.org/clinical/NCT04303507. Licensed CC0.

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