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Coronavirus (CoV) is a single-strand positive-strand RNA virus with membranes, belonging to the order Capaviridae, the family Coronaviridae, and the genus Coronaviridae. It is the largest RNA virus currently known. So far, there are 7 kinds of coronaviruses that can infect humans, namely HCoV-229E and HCoV-NL63 in the α group, HCoV-OC43 and HCoV-HKU1 in the β group A group, and atypical pneumonia virus (SARS-HKU1) in the B group. CoV) and 2019 novel coronavirus (2019-nCoV), Middle East respiratory syndrome coronavirus (MERS-CoV) in group C.