China's health officials say the number of confirmed cases of the coronavirus has risen to 5,974 in 31 provinces with 132 deaths. People are asking why it took so long for controls to be implemented.
Globally, health officials are on high alert, implementing airport screenings, evacuations, border controls and other measures to contain the spread of the coronavirus outbreak.
In Washington, the local health care system is on high alert after the first case of Wuhan coronavirus was confirmed there last week. But it knows how to respond, thanks to recent measles outbreaks.
As the death toll from the new coronavirus mounts, scientists are working to understand the nature of the disease. Questions remain about how readily it spreads and how dangerous it is.
China has now quarantined some 45 million people as it tries to control the spread of coronavirus. It has extended the Lunar New Year holiday and delayed the start of the academic spring semester.