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UMD study: N95 masks nearly perfect at blocking Covid
Researchers Found Even Lower-Performing Masks Were Protective
1 message,” says the study’s senior author, Donald Milton, a professor of environmental health and a global expert on how viruses spread through the air. “Data from our study suggests that a mildly symptomatic person with COVID-19 who is not wearing a mask exhales a little over two infectious doses per hour says first author Jianyu Lai, a postdoctoral researcher at the PHAB Lab. The study includes coauthors from UMD’s A. James Clark School of Engineering and the World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control at the University of Hong Kong.
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