31 дек 2019 г. - The World Health Organisation (WHO) is alerted on Dec 31, 2019, by the Chinese authorities of a string of pneumonia-like cases in Wuhan, a city of 11 million people. Patients are quarantined and work begins on identifying the origin of the pneumonia. The US Centres for Disease Control and Prevention (CDC) identifies a seafood market suspected to be at the centre of the outbreak. It is closed on Jan 1, 2020.
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