![]() Someone can also be exposed via splashes and sprays of respiratory fluids directly onto their mucous membranes. The particles can also linger in the air after a person has left the room – they can remain airborne for hours in some cases. Particles from an infected person can move throughout an entire room or indoor space. They can also be exposed by inhaling aerosol particles that are spreading away from the infected person. Transmission of COVID-19 from inhalation of virus in the air can occur at distances greater than six feet. Since COVID-19 is transmitted through contact with respiratory fluids carrying the infectious SARS-CoV-2 virus, a person can be exposed by an infected person coughing or speaking near them. Indoors, the very fine droplets and particles will continue to spread through the air in the room or space and can accumulate. These droplets carry the virus and transmit infection. ![]() The droplets or aerosol particles vary across a wide range of sizes – from visible to microscopic. Once infectious droplets and particles are exhaled, they move outward from the person (the source). People who are infected with COVID can release particles and droplets of respiratory fluids that contain the SARS CoV-2 virus into the air when they exhale (e.g., quiet breathing, speaking, singing, exercise, coughing, sneezing). Spread of COVID-19 occurs via airborne particles and droplets. Explore all EPA Frequent Questions related to Coronavirus (COVID-19).Read Frequent Questions about Indoor Air and Coronavirus (COVID-19).
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