People could get the novel coronavirus more than once, health experts warn
The novel coronavirus identified at the end of December has infected more than 20,000 people around the world.
The outbreak originated in the central Chinese city of Wuhan. China's Health Commission reported Sunday that among those infected there, 475 people have made full recoveries and 361 have died. The rest are still being treated.
Zhan Qingyuan, director of pneumonia prevention and treatment at the China-Japan Friendship Hospital, said even people who have recovered may not be immune to the virus....