People line up to enter a shop in Berlin, capital of Germany, April 1, 2022. Most of COVID-19 restrictions have been dropped in Berlin since Friday. Only a number of so-called basic protections still apply, which includes the obligation to wear masks on public transport and in facilities such as doctors' offices, hospitals, day clinics, etc. (Photo by Stefan Zeitz/Xinhua)

Passengers wearing face masks are seen on a bus in Berlin, capital of Germany, April 1, 2022. Most of COVID-19 restrictions have been dropped in Berlin since Friday. Only a number of so-called basic protections still apply, which includes the obligation to wear masks on public transport and in facilities such as doctors' offices, hospitals, day clinics, etc. (Photo by Stefan Zeitz/Xinhua)

People dine at a restaurant in Berlin, capital of Germany, April 1, 2022. Most of COVID-19 restrictions have been dropped in Berlin since Friday. Only a number of so-called basic protections still apply, which includes the obligation to wear masks on public transport and in facilities such as doctors' offices, hospitals, day clinics, etc. (Photo by Stefan Zeitz/Xinhua)

Passengers wearing face masks wait for a train on a platform at Berlin Central Train Station in Berlin, capital of Germany, April 1, 2022. Most of COVID-19 restrictions have been dropped in Berlin since Friday. Only a number of so-called basic protections still apply, which includes the obligation to wear masks on public transport and in facilities such as doctors' offices, hospitals, day clinics, etc. (Photo by Stefan Zeitz/Xinhua)