The genus Hepacivirus includes 14 species (Hepacivirus A-N). In this study, we determined a partial genome sequence of a highly divergent bovine hepacivirus (hepacivirus N, HNV) isolate from cattle in Southern Brazil. Previously described HNV isolates have shared 80-99.7% nucleotide sequence identity in the NS3 coding region. However, the sequence determined in this study had 72.6% to 73.8% nucleotide sequence identity to known HNV NS3 sequences. This high divergence could be seen in a phylogenetic tree, suggesting that it represents a new genotype of HNV. These data expand our knowledge concerning the genetic variability and evolution of hepaciviruses.
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