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Fitted Filtration Efficiency of Double Masking During the COVID-19 Pandemic
Although global vaccination efforts against SARS-CoV-2 are underway, the public is urged to continue using face masks as a primary intervention to control transmission. Recently, US public health officials have also encouraged doubling masks as a strategy to counter elevated transmission associated with infectious SARS-CoV-2 variants. US Centers for Disease Control and Prevention investigators reported that doubling masks increased effectiveness, but their assessment was limited in type anddoi:10.17615/pzrf-tx29 fatcat:lmx6ia6m5fdcbhrhm3qvxt6wuy