Washington Post: Massive randomized study is proof that surgical masks limit coronavirus spread, authors say

Washington Post: Massive randomized study is proof that surgical masks limit coronavirus spread, authors say. “The authors of a study based on an enormous randomized research project in Bangladesh say their results offer the best evidence yet that widespread wearing of surgical masks can limit the spread of the coronavirus in communities. The preprint paper, which tracked more than 340,000 adults across 600 villages in rural Bangladesh, is by far the largest randomized study on the effectiveness of masks at limiting the spread of coronavirus infections.”

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