Keeping passengers on ship may have helped spread of coronavirus, says one lawyer

Quarantine conditions imposed on a stricken ship in Japan are both morally dubious and appear counterproductive, according to health experts who fear the vessel has become an incubator for the coronavirus Covid-19.

Thousands of people have spent the past two weeks stuck onboard the Diamond Princess cruise ship, which now accounts for the biggest cluster of cases outside mainland China. More than 540 passengers in the Japanese port Yokohama are confirmed to have the virus, after 88 additional cases were confirmed on Tuesday.