This article was originally published January 25, 2020 and has since been updated with new information.
China is dealing with an outbreak of a virus known formally as the 2019 Novel Coronavirus (also referred to as 2019-nCoV). This newly identified strain of coronavirus was first detected in detected in Wuhan, China. Coronaviruses are a family of viruses that cause respiratory illnesses. Between 15-30% of cases of the common cold are thought to be caused by a coronavirus. Outbreaks of MERS and SARS were also caused by coronaviruses.
Where Has the 2019 Novel Coronavirus Spread?
February 5, 2020 Update: There are now 27,669 confirmed cases of the Wuhan Coronavirus outbreak and 563 deaths. For the first time, this update includes deaths that have happened outside of mainland China. The first death occurred on February 2 in the Philippines. A second death outside mainland China occurred on February 4, 2020 in Hong Kong. 27 countries and special administrative regions outside of mainland China have at least one confirmed case of the coronavirus.
January 31, 2020 Update: There are now 11,374 confirmed cases of the Wuhan Coronavirus and 252 deaths. The vast majority (98.7%) of confirmed cases are still occurring in mainland China. The number of countries and special administrative regions reporting at least one confirmed case is now 26. In addition to the near-realtime information provided by the JHU Wuhan Coronavirus map, the U.S. Center for Disease Control (CDC) is providing frequent updates on the status of the virus.
As of January 25, 2020, there were 1,399 confirmed cases of coronavirus in China and 42 deaths. The first case detected outside of China was in Thailand. Two cases, one each in the states of Washington and Illinois have been detected in the United States. Other countries and special administrative regions reporting cases (a total of 32 additional) to date have been: Australia, Malaysia, Macau, Nepal, Vietnam, Singapore, Japan, South Korea, Taiwan, Hong Kong, Thailand, and France. Wuhan is a major air transportation hub in central China, resulting in potentially infected travelers spreading the virus both locally within China (especially with Chinese New Year travel) and internationally. More: Geography of the Wuhan Coronavirus.
Mapping the 2019 Novel Coronavirus
John Hopkins University (JHU) is tracking the spread of 2019-nCoV in near-realtime. JHU developed a GIS Dashboard using ArcGIS Online that pulls relevant data from WHO, U.S. CDC, ECDC China CDC (CCDC), NHC, and Dingxiangyuan (an aggregator site that pulls NHC summaries and local CCDC reports in near real-time). The online mapping application updates frequently each day to pull in fresh information about the spread of 2019-nCoV. Cases are geocoded by city/place on the map and represented by circles sized based on the number of cases. You can click on the individual entries listed in the “Confirmed Cases by Country/Region” section to pan to that country. Double-click on the map to zoom in, and use your mouse or trackpad to pan around the mouse with your cursor.