UK coronavirus cases double, government declares 'imminent threat'
Alarm over the coronavirus that emerged in Wuhan, China, in December is driven by its rapid spread and the fact that infectious disease experts cannot yet know how deadly or contagious it is.
Medical workers in protective suits attend to novel coronavirus patients inside an isolated ward at a hospital in Wuhan, Hubei province, China February 6, 2020. Picture taken February 6, 2020(photo credit: CHINA DAILY VIA REUTERS)ByREUTERS