Home air filters may cut COVID-19 spread, study finds

NCT ID NCT05777720

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether using box fans with special filters and improving home ventilation could lower the chance of COVID-19 spreading from one infected person to others living in the same home. Researchers studied 214 people living in households with at least 3 members. The goal was to see if these simple changes could help protect family members from catching the virus.

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Conditions

The condition(s) this trial relates to.

Respiratory Aspiration COVID-19 prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • San Mateo Medical Center

    San Mateo, California, 94403, United States

  • Stanford University Medical Center

    Stanford, California, 94305, United States

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