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Mandatory masking in schools reduced COVID-19 cases

SARS-CoV-2, the virus that causes COVID-19, most commonly spreads from person to person through respiratory droplets. These droplets travel through the air when people cough, sneeze, or talk. Studies show that masks reduce the release of droplets when worn over the nose and mouth. While masks can prevent individuals from […]

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Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021

Summary What is already known about this topic? Ventilation systems can be supplemented with portable high efficiency particulate air (HEPA) cleaners to reduce the number of airborne infectious particles. What is added by this report? A simulated infected meeting participant who was exhaling aerosols was placed in a room with […]

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