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Effect of Surgical Masks in Preventing Acute Respiratory Infections

StatusEnrolling by Invitation
PhaseNot applicable
Started
View on ClinicalTrials.gov ↗
Trial flagged as At Risk
Primary endpoint reworded 1 of 1 changed
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Record History

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  1. Primary endpoint(s) modified Show 5 more changesShow less
    • Enrollment increased: 2000 → 2400 participants
    • Start date changed from estimate of Jul 2026 to Jul 31, 2026
    • Eligibility criteria expanded, about 15 words
    • Secondary endpoints revised (3)
    • Site details revised
  2. Study title shortened, about 6 wordsv2
  3. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
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.
Trial Details
NCT Number NCT07739446
Lead Sponsor Chiba University
Conditions
(from sponsor)		 Acute Respiratory Infections (ARIs), Influenza, COVID - 19
Related terms COVID-19, Influenza, Human
Enrollment 2,400 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov