# Effect of Surgical Masks in Preventing Acute Respiratory Infections

> **NCT07739446** · NA · ENROLLING_BY_INVITATION · sponsor: **Chiba University** · enrollment: 2400 (estimated)

## Conditions studied

- Acute Respiratory Infections (ARIs)
- Influenza
- COVID - 19

## Interventions

- **BEHAVIORAL:** Surgical masks

## Key facts

- **NCT ID:** NCT07739446
- **Lead sponsor:** Chiba University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** ENROLLING_BY_INVITATION
- **Start date:** 2026-07-31
- **Primary completion:** 2027-03
- **Final completion:** 2027-03
- **Target enrollment:** 2400 (ESTIMATED)
- **Last updated:** 2026-09-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07739446

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07739446, "Effect of Surgical Masks in Preventing Acute Respiratory Infections". Retrieved via MORVS 2026-10-20 from https://api.morvs.ai/clinical/NCT07739446. Licensed CC0.

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