More than 300 American cruise liner passengers, including 14 who tested positive for coronavirus, were flown home to military bases in the United States, after two weeks under quarantine off Japan.

The cruise ship Diamond Princess, with more than 400 cases by far the largest cluster outside China, has become the biggest test so far of other countries' ability to contain an outbreak that has killed 1,770 people in China and five elsewhere.

Ground crew in anti-contamination suits met a chartered jet that touched down at Joint Base San Antonio in Texas, and passengers could be seen climbing down the stairs wearing face masks in the pre-dawn mist. Another flight landed at Travis Air Force Base in California hours earlier. Those arriving were taken into a two-week quarantine.

Although U.S. officials said passengers with coronavirus symptoms would not be taken, 14 passengers found at the last minute to have tested positive were permitted to board the planes. The U.S. State Department said the infected passengers were kept in isolation on the flights.

Across mainland China, officials said the total number of coronavirus cases rose by 2,048 to 70,548. That was slightly more new cases than were reported on Sunday, but hundreds fewer than reported on Saturday.