The year began with Wuhan health officials reporting a mysterious cluster of pneumonia cases in 27 people to WHO on 31 December 2019, which was followed by scientists in China isolating the new coronavirus (Sars-CoV-2) on January 7, and sharing the its genetic sequence on January 11.
source https://www.hindustantimes.com/cities/eight-promising-covid-vaccines-end-year-in-hope/story-uMgegE900P32AjthJhaoOP.html
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