WHO declares coronavirus a global health emergency

The World Health Organization declared the outbreak sparked by a new virus in China that has been exported to more than a dozen countries as a global emergency Thursday after the number of cases spiked tenfold in a week. The U.N. health agency defines an international emergency as an "extraordinary event" that constitutes a risk to other countries and requires a co-ordinated international response. Up-to-date map: Tracking the spread of the coronavirusChina first informed WHO about cases of the