Subway services have partially resumed in the Chinese city of Shanghai, but a strict lockdown remains in place in many districts to contain the coronavirus outbreak.

Some subway lines resumed operations on Sunday. Local media say train cars were thoroughly disinfected, but few passengers were on board.

City authorities have announced a plan to ease the restrictions in phases and return to normal life in June in response to a drop in case counts.

After having reported more than 20,000 daily new infections in April, the tally started to fall and remained below 1,000 for seven straight days until Saturday.

Residents of districts where no cases have been confirmed for 10 days or more are allowed to go out to buy food and other daily necessities.

But only one person in a family can leave their home at a designated time slot.