Hong Kong has reported 1,347 new daily Covid-19 infections, down from the previous day's record, but the spread, with 2,000 more suspected cases, threatens the city's overstretched healthcare system, authorities said.

The surge in coronavirus cases, the biggest test yet for Hong Kong's “dynamic zero-Covid” strategy, comes a day after the government said China would help the city with testing, treatment and quarantine capacity.

Authorities warned food supplies into the city may be disrupted, after some cross-border truck drivers tested positive for coronavirus, but said they were doing everything to get the situation back to normal “as soon as possible.”