The evidence is still not conclusive, but we do know that there is enough data to at least suggest that airborne spread of COVID-19 could be a possibility.
Based on guidance from the CDC and WHO, we have been treating COVID-19 like other germs that spread through respiratory droplets . This means we’ve been told to cover our coughs and sneezes, stay at least 6 feet away from others, and wash our hands to prevent viral particles that may have contaminated surfaces from entering our bodies.
Respiratory droplets can contain large amounts of virus and are released when an infected person sneezes, coughs, or talks. These droplets are too large and heavy to stay in the air for more than a few seconds and quickly settle out of the air onto surfaces. Because of gravity this is usually within 6 feet, but how far they go can depend on the force of the sneeze or cough.
Defining aerosols gets even murkier. It’s somewhere between free-floating airborne viruses and much larger droplets. Aerosols can be described as a tiny virus-filled mist that allows virus to hang in the air and travel further than droplets. Now, there is some evidence that this new coronavirus can spread through aerosols, even when people have no symptoms.
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