Largest study of its kind finds face masks reduce COVID-19 | Berkeley News

Wearing face masks, particularly surgical masks, is truly effective in reducing the spread of COVID-19 in community settings, finds a new study led by researchers from Yale University, Stanford Medical School, the University of California, Berkeley, and the nonprofit Innovations for Poverty Action (IPA). The study, which was carried out among more than 340,000 adults living in 600 rural communities in Bangladesh, is the first randomized trial to examine the effectiveness of face masks at reducing COVID-19 in a real-world setting, where mask use may be imperfect and inconsistent. The results show that increased mask-wearing –– the result of a community-level mask distribution and in-person promotion campaign –– led to a significant reduction in the percentage of people with COVID-19, based on symptom reporting and SARS-CoV-2 antibody testing.

Source: Largest study of its kind finds face masks reduce COVID-19 | Berkeley News