The Diamond Princess cruise ship has been quarantined in the Japanese city of Yokohama since February 4.

Now another 99 passengers have been confirmed infected by the corona virus. At the same time, 14 Americans who left the luxury cruise have tested positive, just before they went on the plane to the United States.

In total, 454 of the approximately 3,700 people found on the boat have been diagnosed with the virus, reports The Guardian. The infected have been evacuated to Japanese hospitals, while other passengers remain on the boat.