HEPA air filters cut schools’ covid-19 sick days by 20 per cent


A HEPA filter in a classroom at Bowling Park Primary School in Bradford, UK

University of Leeds

Air filter machines put into a handful of UK schools reduced the number of covid-19-related sick days by more than 20 per cent, the first such randomised trial of the intervention has found.

HEPA filters, devices about the size of a tall kitchen waste bin, were placed in the classrooms of schools in the Bradford area. The results haven’t yet been published in a peer-reviewed journal, but one of the researchers revealed the 20 per cent fall …


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