The largest coronavirus outbreak outside mainland China is not in a country, but on a cruise ship.
It's been more than a week since the Diamond Princess went into lockdown, after a previous passenger tested positive for the virus after disembarking.
With almost 500 out of 3,700 people on board tested, 174 people have now tested positive for coronavirus. Those still on board are in quarantine for another week.
But it's not just the Diamond Princess. On another cruise ship in Hong Kong, 3,600 passengers people were quarantined because of fears that people on board might have the virus.
They were only allowed to disembark after tests came back negative.
And a cruise ship carrying more than 1,450 passengers, which left Hong Kong on 1 February, was turned away from ports in Japan, Taiwan, Guam and the Philippines, despite having no infections on board. It has now been told it can dock in Cambodia.
Cruise ships have for years been referred to as "floating Petri dishes" - places ripe for the exchange of germs, and the spreading of illness.