Factbox: Major severe coronavirus outbreaks in the past 20 years

10:34am PST - January 21st, 2020    symptoms of coronaviruses - Reuters

A new coronavirus has emerged from Wuhan, China, with more than 300 cases and at least six deaths linked to the respiratory illness believed to have emerged from animals, but with the ability to transmit person-to-person. The virus has spread beyond China's b…