It is pretty well-known to everyone that Covid-19 spreads by coming in close contact with an infected person and inhaling his respiratory droplets (while he coughs, talks or sneezes). It also spreads indirectly by touching a contaminated surface and then rubbing eyes, nose or mouth. But lately more than 200 scientists from 32 countries sent an open letter to WHO about another route of transmission: aerosols. They claim that tiny respiratory particles float in the air and infect someone who breathes them in. The scientists are calling for greater recognition of aerosol risk.
Now, WHO has said that there was “emerging evidence” that the virus might spread further than previously thought. A look at how particles from our respiratory system travel and can become airborne.