Cluster-Randomized Trial of Air Filtration and Ventilation to Reduce Covid19 Spread in Homes
Public ClinicalTrials.gov record NCT05777720. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Cluster-randomized Controlled Trial of Air Filtration and Ventilation Improvements to Reduce SARS CoV 2 Transmission Among Household Contacts
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Investigators are evaluating whether an intervention consisting of box-fans with MERV 16 filters ("filtration fans") and recommendations for improving ventilation in the home can reduce secondary spread of Covid19 from an index case to susceptible contacts within the home.
Study identification
- NCT ID
- NCT05777720
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 214 participants
Conditions and interventions
Conditions
Interventions
- Filtration Fan Device
- Safe-home pamphlet Behavioral
- Mid-week phone call Behavioral
Device · Behavioral
Eligibility (public fields only)
- Age range
- Not listed
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jan 29, 2023
- Primary completion
- Dec 29, 2025
- Completion
- Dec 29, 2025
- Last update posted
- Feb 18, 2026
2023 – 2025
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| San Mateo Medical Center | San Mateo | California | 94403 | — |
| Stanford University Medical Center | Stanford | California | 94305 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05777720, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Feb 18, 2026 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05777720 live on ClinicalTrials.gov.