phylogeography, phylodynamics and transmission chains of bovine viral diarrhea virus subtype 1f in northern italy.bovine viral diarrhea virus (bvdv) type 1 in italy is characterized by high genetic diversity, with at least 20 subtypes. subtype 1f is endemic in a restricted geographic area, meaning that it has local distribution. we investigated the population dynamics of bvdv-1f in northern italy and characterized the transmission chains of a subset of samples from piedmont and aosta valley regions. a total of 51 samples from 1966 to 2013 were considered and 5' utr sequences were used for phylogeography. a ...201627619057
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