China reported its highest daily number of new coronavirus cases in months on Sunday with parts of Beijing still under lockdown, offering a second wave warning as more European countries prepare to open their borders for travel.

China reported 57 new cases of the coronavirus on Sunday, the highest daily figure since April, as concerns grew about a resurgence of the disease.

For days now, Spain's daily coronavirus death toll has been on hold, generating widespread uncertainty about the real state of the epidemic that has claimed more than 27,000 lives.

The United States has recorded another 839 coronavirus-related fatalities in the last 24 hours, bringing the country's death toll to 114,613, according to a tally Friday by Johns Hopkins University.

The coronavirus pandemic has killed 425,000 people since it emerged in China late last year, according to an AFP tally of official sources at 0130 GMT on Saturday.

A total of 425,282 deaths have now been recorded from 7,632,517 cases.

Lockdowns were imposed in parts of Beijing on Saturday to try and prevent the spread of a new coronavirus cluster, highlighting the challenges that lie ahead even for places where outbreaks are under control.

Brazil has surpassed 40,000 deaths from the novel coronavirus and 800,000 cases, according to the latest figures from the health ministry on Thursday.

Masks and gloves will be the order of the day when the prime ministers of four ex-communist countries on Thursday hold  the first major face-to-face meeting of European leaders since the coronavirus crisis.

The number of confirmed coronavirus infections in the United States topped two million on Wednesday, according to a tally by Johns Hopkins University.

Cabin crew in protective suits, health certifications for passengers, mandatory face masks, and longer check-in times.