A properly worn mask and a well-ventilated room are much more reliable in preventing COVID-19 infection than keeping a distance of 1.8-2 meters, Florida scientists noted.

The specialists created a computer model of a university audience with students and teachers, and then reproduced the air flow and calculated the possible risk of spreading SARS-Cov-2. All those present should be in the room only in masks.

The results confirmed the benefits of masks: as it turned out, they prevent direct exposure to viral aerosols by creating a weak flow of warm air. It causes the aerosols to move vertically, protecting other students from dripping.

The study also showed that ventilation with a good air filter reduces the risk of contamination by 40-50% compared to unventilated rooms.

Scientists have confirmed the recent recommendations of the US Centers for Disease Control (CDC) to reduce the social distance from 6 to three 3 (91 cm) while wearing masks.