Visualizing the effectiveness of face masks in obstructing respiratory jets 

Physics of Fluids 32, 061708 (2020)

Abstract:

We use qualitative visualizations of emulated coughs and sneezes to examine how material- and design-choices impact the extent to which droplet-laden respiratory jets are blocked.

Loosely folded face masks and bandana-style coverings provide minimal stopping-capability. Well-fitted homemade masks with multiple layers of quilting fabric and cone style masks were the most effective in reducing droplet dispersal.

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Testing for SARS-CoV-2 Infection Among Incarcerated and Detained Persons

A new MMWR report details an investigation conducted by CDC and the Louisiana Department of Health to determine SARS-CoV-2 infection prevalence in quarantined dormitories in a Louisiana correctional facility. 

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