Wearing a face mask could help beat coronavirus by exposing people to milder forms of the killer bug and so leading to community-level immunity, a new study claims.
Face masks have been widely heralded for preventing other people getting infected by blocking the coughs and sneezes of those wearing them.
But now scientists also believe they make the symptoms of those who do get the infection less severe by reducing the amount of virus droplets they are exposed to.
The paper, by infectious disease experts from the University of California, presents evidence to suggest that masks cut down on the amount of viral droplets getting into the airways.