Effect of Surgical Masks in Preventing Acute Respiratory Infections

Sponsor
Chiba University
Study ID
NCT07739446
Status
Enrolling By Invitation

Conditions

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

Eligibility Criteria

Sex
ALL
Age
20 Years - 49 Years
Healthy Volunteers
Accepted

Interventions

  • Surgical masks — BEHAVIORAL
    Participants in this group are provided with masks and asked to wear them every day

Study Details

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.

Key Dates

First listed
Jul 31, 2026
Start date
Jul 31, 2026
Status verified
Jul 2026
Primary completion
Mar 31, 2027
Completion
Mar 31, 2027

Study Design

Enrollment
2,000 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION

Arms

  • Experimental: Surgical mask
    Participants in this group are provided with masks and asked to wear them every day
  • No Intervention: No intervention
    Participants in this group are not provided with masks and are asked not to wear them every day

Primary Outcome Measure

Laboratory-confirmed influenza [ Time Frame: From start of influenza season to the end of data collection at 14 weeks ]

Related Studies