All posts by nedhamson

Activist, writer, researcher, addicted to sharing information and facts.

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

Placing HEPA air filters into classrooms in the Bradford area of the UK reduced the number of covid-19-related absences among students by more than 20 per cent.. Source: HEPA air filters cut schools’ covid-19 sick days by 20 per cent | New Scientist