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  • NATURE 06 October 2021

Real-world data show filters clean COVID-causing virus from air

An inexpensive type of portable filter efficiently screened SARS-CoV-2 and other disease-causing organisms from hospital air.
HEPA Filter Integrity Test and Airflow Visualization Test.

Highly efficient devices called HEPA filters (right) successfully remove coronavirus particles from the air.Credit: Getty

Research at a hospital swamped by people with COVID-19 has confirmed that portable air filters effectively remove SARS-CoV-2 particles from the air — the first such evidence in a real-world setting1. The results suggest that air filters could be used to reduce the risk of patients and medical staff contracting SARS-CoV-2 in hospitals, the study’s authors say.

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