Three weeks after Chinese officials announced the outbreak of a new virus, more than 400 people have been sickened and 17 have died, leading to questions of just how alarmed the public should be.
The coronavirus, or 2019-nCoV, began at an animal and seafood market in the city of Wuhan and has since spread to several other countries, including the United States. The illness is now said to be transferable between humans.-- More...