Where did SARS-CoV-2 come from?

AT the end of 2019, a novel coronavirus (2019-nCoV) was discovered in Wuhan city, Hubei province, central China.1 Due to the close genetic relationship with severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV), it was renamed as SARS-CoV-2 by the International Committee on Taxonomy of Viruses. Since the first case report in China, SARS-CoV-2 has, at the time of writing, also been reported in 28 other countries. Up to 22 February 2020, 76,396 …