New Government rules requiring customers to wear face coverings in shops came into effect today – 24th July. Mostly Books, and some other shops had reminders in their windows. The gov.uk webpage has the full details.
From about 30% of people wearing face coverings in shops yesterday in Abingdon it looked like everybody had one today, and many people were not taking them off between shops, or were leaving them dangling round their necks.
If you cough (or breath out) and have Covid-19 and are asymptomatic, the face covering protects others.
The covering should also provide some protection from Coronavirus in the air, but anybody wearing it round their neck can contaminate the inside of the covering.