Germany's foreign ministry is calling on the country's citizens to avoid non-essential travel to China, which is facing an explosive surge in coronavirus infections.

The call, made via Twitter, cites China's "overwhelmed health system." It says visitors to China may be unable to access sufficient treatment in an emergency.

Starting on Monday, Germany will require all arrivals from China to show a negative coronavirus test conducted within 48 hours before departure.

The move is in line with the European Union's recommendations that member countries strengthen border controls for people arriving from China.