The death of a doctor who issued an early warning about the new virus in China represents a grim reminder that the first health care workers to recognize new outbreaks are sometimes among their earliest victims.
German health officials have raised questions about a report that suggested the new virus from China could be spread by people who are not yet showing symptoms.
Hong Kong hospitals cut services as thousands of medical workers went on strike for a second day Tuesday to demand the border with mainland China be shut completely.
The first patients arrived Monday at a 1,000-bed hospital built in 10 days as part of China's sweeping efforts to fight a new virus that is causing global alarm.
The United States on Friday declared a public health emergency and announced significant entry restrictions because of a new virus that hit China and has spread to other nations.
Nearly 200 Americans were evacuated from the city of Wuhan and flown to March Air Reserve Base in Southern California until authorities confirm they don't have the virus.
The World Health Organization declared the outbreak sparked by a new virus in China that has spread to more than a dozen countries as a global emergency Thursday.