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In this study, we performed phylogenetic and evolutionary analysis on bovine viral diarrhea virus 1 (BVDV-1) sequences to investigate the origin and temporal diversification of different BVDV-1 subtypes. Dated phylogenies using the complete polyprotein sequence were reconstructed, and the time of the most recent common ancestor (tMRCA) was estimated. The results demonstrated that BVDV-1 subtypes clustered into two phylogenetic clades, where the predominant subtypes worldwide grouped together. In the temporal analysis, the tMRCA of BVDV-1 was 1336, and the diversification into different subtypes appears to have occurred around 363 years ago. The present results help to elucidate the origins of BVDV-1 subtypes and the dynamics of ruminant pestiviruses.

Insights into the origin and diversification of bovine viral diarrhea virus 1 subtypes