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Can a phone app keep kids safe from heat? beijing study tests digital alerts

NCT ID NCT07643571

Prevention Sponsor: Centers for Disease Control and Prevention, China 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 This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a WeChat mini-program that sends heat warnings to parents and teachers of 200 fourth-graders in Beijing. When temperatures reach risky levels, the program shares health tips and alerts. The goal is to see if this helps children stay physically healthy and think clearly during hot weather. The trial compares kids whose families get the alerts to those who follow their normal routines.

What this could mean

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

Active substance
WeChat mini-program-based heat health risk early warning intervention
What this could lead to
If it works, this could provide a simple digital tool to help protect children from heat-related health problems like heart strain, breathing issues, and trouble thinking clearly.
What could go wrong
This is a small early study in just six schools, so results may not apply to other regions or age groups. The intervention depends on parents and teachers passing on alerts, which may not always happen.

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.

Participants

About 200 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Sep 2026

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Ages

9 to 11 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.

School inclusion criteria 1. Willing to participate in the study. 2. Possess adequate facilities and qualified teaching staff. 3. The school and teachers maintain good cooperation. 4. Class size is no less than 35 students. 5. All participating classrooms are equipped with air conditioners. Participant inclusion criteria 1. Fourth-grade primary school students aged 9 to 11, of all genders. 2. Voluntary participation by students and their parents, good compliance, and signed informed consent. 3. At least one adult family member has an internet-enabled mobile device. 4. Good general health with no history of severe physical or mental disorders. 5. Local permanent residents with a residency of no less than 6 months. Participant exclusion criteria 1. Participants who are unable or refuse to complete required examinations. 2. Students receiving psychological or psychiatric treatment that may confound the study results. 3. Those currently enrolled in other interventional clinical studies that may affect outcome assessment. 4. Any other conditions deemed ineligible by the research team. Any participant meeting any of the above exclusion criteria will be excluded from the study.

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder Heat Stress Disorders mental disorder respiratory system disorder

As listed by the trial registrant

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

Cardiovascular diseases Heat illness Mental health disorders Neurocognitive impairment Respiratory diseases

How to take part

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  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

More trials for these conditions

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