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Purpose

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.

Condition

Eligibility

Eligible Ages
All ages
Eligible Genders
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Household members live in a shared space (apartment, home) with others (as opposed to renting single rooms in a shared space, for example) - At least 3 other people live in the household aside from index case

Exclusion Criteria

  • If index case test positive day was over 2 days prior - If half or more household members are thought to be infected already - If household has fewer than 3 contacts interested in participating in the study - If fewer than 3 contacts are expected to be present in the house for a majority of the following 7 days

Study Design

Phase
N/A
Study Type
Interventional
Allocation
Randomized
Intervention Model
Single Group Assignment
Primary Purpose
Prevention
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
No Intervention
Control 		No intervention will be administered in this arm. Investigators will give families a CO2 monitor to measure average CO2 levels in the home. Investigators will provide a link to the basic CDC isolation guidelines which would be part of standard of care. Investigators will test family members at day 0-1 for baseline testing; and again on day 7 for assessing secondary transmission among susceptible contacts.
Experimental
Intervention 		Families are provided with one filtration fan unit per room in their home (and one for the index case; if the family lives in a studio, they would receive 2 units). Investigators will advise families on ventilation improvements in their home. Investigators will provide an instructional pamphlet that describes how the fans work and the importance of ventilation. Investigators will follow-up on day 3-4 to check in and run through a checklist to ensure the fans are working and ventilation improvements are being attempted. Investigators will give families a CO2 monitor to measure average CO2 levels in the home. Investigators will test family members at day 0-1 for baseline testing; and again on day 7 for assessing secondary transmission among susceptible contacts.
  • Device: Filtration Fan
    Investigators are using box fans with attached MERV16 filters, a design that has been tested and published in the scientific literature.
  • Behavioral: Safe-home pamphlet
    The pamphlet has information on how the filtration fans work through visual images; and images of ventilation improvements in the home through opening windows.
  • Behavioral: Mid-week phone call
    On day 3-4 of the study, the study coordinator assigned to the house will call and check in regarding the filtration fan usage and remind families about the importance of filtration and ventilation.

Recruiting Locations

More Details

NCT ID
NCT05777720
Status
Enrolling by invitation
Sponsor
Stanford University

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.