Classroom air cleaners put to the test in 180 dutch schools
NCT ID NCT07479420
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study tested whether portable air cleaners can make classroom air healthier for children. Researchers placed HEPA filter or ionization air cleaners in some classrooms and compared them to classrooms without any cleaner. They measured germs, dust, and particles in the air over several weeks. The goal was to see if these devices reduce airborne bacteria, viruses, and particulate matter that can affect kids' health and learning.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
HEPA filter air cleaners and ionization/plasma air cleaners
What this could lead to
If successful, this could show that portable air cleaners help reduce germs and dust in classrooms, potentially improving children's respiratory health and learning environment.
What could go wrong
This is an observational study, not a treatment trial. Results may not apply to other settings, and the devices might not significantly reduce illness or absenteeism.
Disclaimer
Read more
Show less
This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for AIRBORNE MICROORGANISMS are added.
By submitting, you agree to our Terms of use
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Locations
-
Utrecht University
Utrecht, Utrecht, 3508 TC, Netherlands