On 31 December 2019, a cluster of pneumonia of unknown etiology was reported in Wuhan City, Hubei Province of China. On 9 January Chinese authorities reported in the media that the cause of this viral pneumonia was initially identified as a new type of coronavirus, which is different from any other human coronaviruses discovered so far . Coronaviruses are a large family of respiratory viruses that can cause diseases ranging from the common cold to the Middle-East Respiratory Syndrome and the Severe Acute Re

Source: WHO advice for international travel and trade in relation to the outbreak of pneumonia caused by a new coronavirus in China