Amid a shortage of medical-grade face masks, such as surgical masks (loose-fitting, disposable masks that block large droplets but don’t filter small particles) and N95 respirators (tight-fitting face ...
Cloth face coverings may help curb COVID-19 transmission because presymptomatic and asymptomatic people can transmit SARS-CoV-2. Wearing a mask helps contain respiratory droplets from talking, ...
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