Coronavirus (COVID-19) usually spreads by droplets from coughs, sneezes and speaking. These droplets can also be picked up from surfaces, if you touch a surface and then your face without washing your hands first. This is why social distancing, regular hand hygiene, and covering coughs and sneezes is so important in controlling the spread of the virus.
The best available scientific evidence is that, when used correctly, wearing a face covering may reduce the spread of coronavirus droplets in certain circumstances, helping to protect others.
Because face coverings are mainly intended to protect others, not the wearer, from coronavirus (COVID-19) they are not a replacement for social distancing and regular hand washing.
It is important to follow all the other government advice on coronavirus (COVID-19) including staying safe outside your home. If you have recent onset of any of the most important symptoms of coronavirus (COVID-19):
you and your household must isolate at home and arrange to have a test as soon as possible to confirm if you have COVID 19.