The Pteronotus parnellii bat (Parnell's mustached bat) harbored the BRZ batCoV virus, which the researchers say has likely been silently circulating in Latin America for some time, given limited sampling in the region.

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The researchers, from Japan and Brazil, collected intestinal tissue samples from 70 bats from three locations from May to August 2019 and digitally studied the virus's genetic sequence. The process revealed a distinct subgenus with a functional furin cleavage site (FCS) on its spike protein and a unique amino acid sequence motif that differs from that of SARS-CoV-2 by only one amino acid.

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The results underscore the importance of RNA virus surveillance in South American bats [...]