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Effect of Surgical Masks in Preventing Acute Respiratory Infections

NCT07739446 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 2000

Last updated 2026-08-03

No results posted yet for this study

Summary

The goal of this clinical trial is to evaluate the efficacy of surgical masks in preventing acute respiratory tract infections. The main question it aims to answer is:

\- Does wearing a mask prevent you from getting acute respiratory tract infections, including influenza and COVID-19

Researchers will compare a surgical mask to no intervention to see if wearing a mask works to prevent acute respiratory infection.

Participants will:

* Wear or not wear a surgical mask every day
* Answer a questionnaire every 2 weeks on symptoms, testing status, and behaviors

This trial does not assess if wearing a mask prevents transmission of pathogens when you are already sick. Also, the trial does not assess whether universal masking (where everyone wears masks) works.

Conditions

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

Interventions

BEHAVIORAL

Surgical masks

Participants in this group are provided with masks and asked to wear them every day

Sponsors & Collaborators

  • Chiba University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
49 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-07-31
Primary Completion
2027-03-31
Completion
2027-03-31

Countries

  • Japan

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07739446 on ClinicalTrials.gov