Largest study of masks yet details their importance in fighting Covid-19 – NBC News

Largest study of masks yet details their importance in fighting Covid-19

A study involving more than 340,000 people in Bangladesh offers some of the strongest real-world evidence yet that mask use can help communities slow the spread of Covid-19. The research, conducted across 600 villages in rural Bangladesh, is the largest randomized trial to demonstrate the effectiveness of surgical masks, in particular, to curb transmission of the coronavirus.

Though previous, smaller studies in laboratories and hospitals have shown that masks can help prevent the spread of Covid, the new findings demonstrate that efficacy in the real world — and on an enormous scale.

This would easily translate to schools and seems from the data to be effective in reduction of illness even with around 30% take up (author comment)

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