Officials warn coronavirus will affect more Americans after Chicago woman diagnosedThe woman in her 60s started feeling sick three days after returning home from China, where at least 25 people have died from the virus and over 800 people have been infected.
China coronavirus: Beijing cancelled Chinese New Year celebrations
Lockdown measures are increasing across China's Hubei province to try to control the spread of a new virus that has left 17 people dead.
Wuhan, Hubei's capital of 11 million people where the virus first emerged, has no trains or planes in or out.
At least four other provincial cities are seeing clampdowns on transport.
There are more than 500 confirmed cases of the virus, which has spread abroad, with Singapore, Saudi Arabia and Vietnam the latest affected.