AAAAI: UV Filtration in HVAC Units May Benefit Children With Asthma

Follow Drugslib on

By Elana Gotkine HealthDay Reporter

Medically reviewed by Carmen Pope, BPharm. Last updated on March 9, 2026.

via HealthDay

MONDAY, March 9, 2026 -- Ultraviolet (UV) filtration in heating, ventilation, and air conditioning (HVAC) is associated with alteration in environmental microbial diversity, which may yield an improvement in asthma severity, according to a study presented at the annual meeting of the American Academy of Allergy, Asthma & Immunology, held from Feb. 27 to March 2 in Philadelphia.

Kaleb Ware, M.D., from the University of Cincinnati, and colleagues hypothesized whether UV filtration in HVAC could affect household environmental microbial diversity in a study involving pediatric patients with asthma. Patients were randomly assigned to receive UV filtration (CREON2000A) or a sham device in the HVAC units. At the time of device placement and after 12 months, dust samples were collected from household carpets of enrollees. Changes in bacterial alpha/beta diversity and species relative abundance were examined in 14 paired dust samples (seven with UV filtration; seven with sham device) and were correlated with the primary end point of Composite Asthma Severity Index (CASI).

The researchers observed no discernible difference in alpha/beta diversity or differential species abundance comparing UV filtration versus sham conditions. The relative abundance of certain organisms commonly associated with the oral microbiome (Fusobacterium nuculatum and Veillonella parvula) had a logfold >2 decrease per one-unit improvement in CASI from baseline to follow-up for homes with the CREON2000A device. CASI improvement was also associated with enrichment of several common gut commensals.

"We created a pilot study that highlights the potential of bacterial changes in the setting of HVAC-based ultraviolet light to affect asthma symptom modulation and control," Ware said in a statement.

One author was employed by General Innovations and Goods Inc.

Press Release

More Information

Disclaimer: Statistical data in medical articles provide general trends and do not pertain to individuals. Individual factors can vary greatly. Always seek personalized medical advice for individual healthcare decisions.

Source: HealthDay

Posted : 2026-03-10 01:46

Read more

Disclaimer

Every effort has been made to ensure that the information provided by Drugslib.com is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Drugslib.com information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Drugslib.com does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Drugslib.com's drug information does not endorse drugs, diagnose patients or recommend therapy. Drugslib.com's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Drugslib.com does not assume any responsibility for any aspect of healthcare administered with the aid of information Drugslib.com provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Popular Keywords