China announces an investigation after a whistle-blowing Wuhan doctor dies from the virus.
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Japanese officials said on Friday that 61 people had tested positive for the coronavirus on a quarantined cruise ship in Yokohama, a steep increase from the 20 confirmed cases on Thursday.
Officials have screened 273 passengers they said were potentially exposed to the virus. The 41 new patients were to be taken off the ship for medical treatment.
More than 2,000 passengers on the Diamond Princess ship have been stuck inside their cabins for days as part of a two-week quarantine. Meals have been irregular, and only on Thursday were small groups finally permitted to go outside and breathe some fresh air.