The use of cloth masks is now mandatory on public transport and, in most regions, within shops.

The rules vary among the 16 German states - Bavaria being the strictest, while in Berlin shoppers do not have to wear masks.

But the authorities are moving very cautiously in easing the lockdown.

Across the world countries are coming up with their own guidance on mask-wearing. However, the World Health Organization (WHO) advice suggests people should wear protective masks only if they are sick and showing symptoms, or if they are caring for people suspected to have Covid-19.

It says masks are not recommended for the general public because they can be contaminated by coughs and sneezes, and might offer a false sense of security.

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