Air Filtration Systems Ineffective Against Airborne Viruses, Study Finds

Reviewed studies predate COVID-19 pandemic, with none conducted during the era yet published.

Air filtration systems, germicidal lights, and ionizers do not reduce the risk of catching an airborne virus, according to a new study from the University of East Anglia.
The study analyzed data from 32 prior studies conducted in real-world settings like schools or nursing facilities.
The researchers found no strong evidence that air treatment technologies are likely to protect people in real-world settings.
The studies reviewed were all conducted prior to the COVID-19 pandemic, and none of the studies of air treatment started during the COVID era have been published yet.
Despite the findings, the lead researcher expressed hope that future studies conducted during the COVID-19 pandemic might provide more insight into the effectiveness of air treatment technologies.