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Can a $20 fan and filter keep kids healthier at school?

NCT ID NCT06247059

Prevention Sponsor: Stanford University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled This study
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 24, 2026 · Last updated Aug 25, 2026 · Updated 1 time

Summary

This study tests whether simple, low-cost air cleaning devices—box fans with filters and ultraviolet light lamps—placed in classrooms can reduce how often schoolchildren catch respiratory viruses like flu and COVID-19. Researchers will compare illness rates among children in classrooms with these devices versus those without. The goal is to find an affordable way to improve air quality and reduce sickness in schools.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Box fans with MERV-14 filters and/or 222nm ultraviolet germicidal irradiation lamps
What this could lead to
If effective, these low-cost air cleaners could become a simple way to cut viral illnesses in schools, especially in low-resource settings.
What could go wrong
The trial is early and results may vary by classroom conditions. The devices may not reduce infections as hoped, and installation could be disruptive.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Expected to start

Oct 2025

An estimate. Start dates often move.

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

9 to 12 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Schoolchildren of Bangladesh Government-run primary schools in Dhaka, Bangladesh ages 9 - 12 years, of all gender identifiers (male, female, transgender, prefer not to designate), without specific ethnic selection amongst standard school children of Bangladesh government schools in Dhaka, Bangladesh. Exclusion Criteria: * School children of non-Bangladesh Government-run primary schools and/or schoolchildren who do not attend a Bangladesh Government-run primary school in Dhaka, Bangladesh. * School children who are not able to or have a contraindication with the ability to comply with study procedures.

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Conditions

The condition(s) this trial relates to.

COVID-19 influenza viral respiratory tract infection

As listed by the trial registrant

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

Influenza viral infections Respiratory viral infection SARS-COV2 infection

More trials for these conditions

Other studies related to the condition(s) this trial covers.