Some additional information: this paper cites the unpublished paper you mention ("Genomic characterization and infectivity of a novel SARS-like coronavirus in C

Some additional information: this paper cites the unpublished paper you mention ("Genomic characterization and infectivity of a novel SARS-like coronavirus in Chinese bats"): https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30154-9/fulltext https://www.thelancet.com/journals/lancet/article/PIIS0140-6... With regard to ZC45, which your paper discusses, it states: > The genome of our virus strains are phylogenetically closest to the bat SARS-related coronaviruses first found in the Chinese horseshoe bats, Rhinolophus sinicus, captured in Zhoushan, Zhejiang province, China, between 2015 and 2017. The full virus genome had about an 89% nucleotide identity with bat-SL-CoVZC45, which makes it a new species. Moreover, the Spike protein of our virus has an 84% nucleotide identity with the bat-SL-CoVZC45 coronavirus and an 78% nucleotide identity with the human SARS coronavirus. Doesn't answer your question as to how common this is, but provides some additional context on the extent of similarities.