The Science of Masking to Control COVID-19

The Science of Masking to Control COVID-19

coronavirus

Valid as of November 16, 2020

Most SARS-CoV-2 Infections Are Spread by People without Symptoms

Infection is spread primarily through exposure to respiratory droplets exhaled by infected people when they breathe, talk, cough, sneeze, or sing

Most of these droplets are ................
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