With one exception, every gold standard study of masks in community settings has failed to find that they slow the spread of contagious respiratory diseases. The outlier is a widely cited study run in Bangladesh during the Covid-19 pandemic, and some of its authors claim it proves that mask mandates “or strategies like handing out masks at churches and other public events—could save thousands of lives each day globally and hundreds each day in the United States.”
Read MoreAnalysis: Famed Bangladesh Mask Study Excluded Crucial Data
