Masks will be compulsory on public transport in Spain from Monday as the country moves to gradually relax its tough lockdown.
Other countries have brought in different rules around the wearing of face masks.
They are to become compulsory on public transport in Germany, and in supermarkets and pharmacies in Austria.
Residents in Lombardy in Italy must cover their nose and mouth when outside and the French government plans to give out masks to the general public.
Air passengers in Canada must wear a non-medical mask or a face covering, and in the USA, people are advised to wear “cloth face coverings” in supermarkets and pharmacies.
Covid-19 (Coronavirus) news from BBC