A virus similar to the SARS pathogen has killed 259 people and spread around the world since emerging in a market in the central Chinese city of Wuhan.
As of 1 February, China’s National Health Commission has said nearly 12,000¬†people have been infected by the novel coronavirus.
Outside mainland China, there have been more than 100 infections reported in more than 20 countries.
The World Health Organization has declared an international emergency over the outbreak.
Here are the places that have confirmed cases of the 2019 novel coronavirus:
China
As of 1 February, 11,791 people have been infected across China, the majority in and around Wuhan.
Most of the 259 who have died were in that region, but officials have confirmed multiple deaths elsewhere, including in the capital Beijing.
Europe
Britain
British health officials have announced that two people have tested positive for the virus.
Finland
A tourist from Wuhan tested positive for the virus on Wednesday 29 January and is being treated in isolation in hospital.
France
There are six known cases in France, the first European country to be affected.
Germany
Germany now has seven confirmed cases.
Italy
Italian Prime Minister Giuseppe Conte announced the first two cases in his country on Thursday 30 January; two Chinese tourists who recently arrived in Italy.
Russia
Russia said on 31 January that two Chinese citizens had tested positive in the country’s first cases.
Sweden
Sweden has announced its first case on 31 January, a woman whose nationality has not been revealed.
Spain
Spain reported its first case on 31 January in a man on the island of La Gomera in the Canaries who was one of five people isolated after coming into contact with a German man with the illness.
Asia-Pacific
Australia
Ten patients have been confirmed in Australia. Most of them arrived in the country from Wuhan or Hubei province.
Cambodia
Cambodia’s health ministry has so far reported one case, a 60-year-old man who arrived from Wuhan.
Hong Kong
In Hong Kong, 13 people are known to have the disease.
India
Officials confirmed the first case in Kerala, southern India, on Thursday 30 January. The woman, a student at Wuhan University, was isolated at a hospital.
Japan
Health authorities have registered 14 cases, including two cases of human-to-human transmission.
Macau
Macau, a gambling hub hugely popular with Chinese mainland tourists, has confirmed seven cases.
Malaysia
Malaysia has confirmed eight cases so far, all Chinese nationals.
Nepal
Nepal has reported one case so far: a man who arrived from Wuhan.
The Philippines
The Philippines has reported one case of the virus, a 38-year-old woman who arrived from Wuhan and is no longer showing symptoms.
Singapore
Singapore announced three new cases on Friday 31 January, bringing its total to 16.
South Korea
South Korea has confirmed 12 cases of the virus, with the latest a 49-year-old Chinese man who worked as a tour guide in Japan. He arrived in South Korea from Japan on 19 January.
Sri Lanka
Sri Lanka has confirmed one case, a 43-year-old Chinese tourist from Hubei province.
Taiwan
Taiwan has uncovered ten cases so far, including two female Chinese nationals in their 70s who arrived in the country as part of a tour group.
Thailand
Thailand has announced 19 confirmed infections.
Vietnam
Vietnam reported one more case on 1 February, taking the total in the country to six. State media said the latest case is a 25-year-old hotel receptionist in central Khanh Hoa province.
North America
Canada
Canada has confirmed four cases so far.
United States
The US has confirmed seven cases: three in California, two in Illinois, one in Arizona and one in Washington state.
Middle East
United Arab Emirates
UAE health officials said Wednesday a Chinese family of four had all tested positive for the virus after arriving from Wuhan several days ago.