Novel Coronavirus (2019-nCoV) – Then and Now

This piece was last updated 31 January at 03:32 GMT. As such, this may not reflect up-to-date information. Please visit for real-time information.

• On 31 December 2019, the WHO China Country Office was informed of cases of pneumonia unknown etiology (unknown cause) detected in Wuhan City, Hubei Province of China. From 31 December 2019 through 3 January 2020, a total of 44 case-patients with pneumonia of unknown etiology were reported to WHO by the national authorities in China. During this reported period, the causal agent was not identified.

• On 11 and 12 January 2020, WHO received further detailed information from the National Health Commission China that the outbreak is associated with exposures in one seafood market in Wuhan City.

• The Chinese authorities identified a new type of coronavirus, which was isolated on 7 January 2020.

• On 12 January 2020, China shared the genetic sequence of the novel coronavirus for countries to use in developing specific diagnostic kits.

• On 13 January 2020, the Ministry of Public Health, Thailand reported the first imported case of lab-confirmed novel coronavirus (2019-nCoV) from Wuhan, Hubei Province, China.

• On 15 January 2020, the Ministry of Health, Labour and Welfare, Japan (MHLW) reported an imported case of laboratory-confirmed 2019-novel coronavirus (2019-nCoV) from Wuhan, Hubei Province, China.

• On 20 January 2020, National IHR Focal Point (NFP) for Republic of Korea reported the first case of novel coronavirus in the Republic of Korea.

From “”

21 January: 282 Cases
22 January: 314 Cases
23 January: 581 Cases
24 January: 846 Cases
25 January: 1,320 Cases
26 January: 2,014 Cases
27 January: 2,798 Cases
28 January: 4,593 Cases
29 January: 6,065 Cases
30 January: 7,818 Cases
31 January: 9,826 Cases