Chinese health officials identified an unusual cluster of pneumonia cases in the city of Wuhan, China, all linked to a new coronavirus strain, on 29 December 2019. The sudden increase in the number of cases in the Wuhan area prompted the Chinese government to announce a full lock-down by 23 January 2020.
On January 30th, 2020, the World Health Organization (WHO) declared the outbreak of coronavirus disease as a 'public health emergency of international concern' and by March 27th, 2020, more than 100 countries had reported laboratory-confirmed cases of Covid-19 worldwide, with about 500,000 cases and a death toll of about 21,000 people.
infographic by: graphicspedia.net
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