# Risk Factors for Community- and Workplace Transmission of COVID-19

> **NCT04320732** · — · RECRUITING · sponsor: **Oslo University Hospital** · enrollment: 250000 (estimated)

## Conditions studied

- Coronavirus

## Interventions

- **BEHAVIORAL:** Observation of behavior and COVID-19 infection will be conducted.

## Key facts

- **NCT ID:** NCT04320732
- **Lead sponsor:** Oslo University Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-03-27
- **Primary completion:** 2025-03-27
- **Final completion:** 2030-03-20
- **Target enrollment:** 250000 (ESTIMATED)
- **Last updated:** 2021-12-13

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04320732

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04320732, "Risk Factors for Community- and Workplace Transmission of COVID-19". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04320732. Licensed CC0.

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