BEIJING, CHINA - JANUARY 21: Chinese children wear protective masks as they wait to board trains at Beijing Railway station before the annual Spring Festival on January 21, 2020 in Beijing, China. The number of cases of a deadly new coronavirus rose to nearly 300 in mainland China Tuesday as health officials stepped up efforts to contain the spread of the pneumonia-like disease which medicals experts confirmed can be passed from human to human. The number of those who have died from the virus in China climbed to six on Tuesday and cases have been reported in other parts of Asia including in Thailand, Japan, Taiwan and South Korea. (Photo by Kevin Frayer/Getty Images)

A visual guide to the Wuhan coronavirus

Updated 1418 GMT (2218 HKT) January 27, 2020

An outbreak of new coronavirus has sickened about 1,400 people worldwide and killed at least 41 in mainland China, while spreading to countries around the world.

Its emergence has fueled fears of a deadly epidemic as hundreds of millions of people travel in China, or around the Asian region, during the Lunar New Year holiday.

What is the virus?


Coronavirus is a large family of viruses, which include severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS).
Common symptoms include a runny nose, cough, sore throat, and possibly a headache. Those who have a weakened immune system, particularly the young and the elderly, are at risk of the virus turning into a more serious respiratory tract illness.
Authorities said the Wuhan coronavirus was passed from animals to humans; can be spread from person to person; and appears to cause pneumonia in people who have weakened immune systems.
It is thought to be milder that SARS and MERS and take longer to develop symptoms. Patients to date have typically experienced a mild cough for a week followed by shortness of breath, cau