Loading video... VIDEO: Piscine orthoreovirus (PRV) - which is associated with kidney and liver damage in Chinook salmon - is continually being transmitted between open-net salmon farms and wild juvenile Chinook salmon in... view more Credit: Video credit: Amy Romer Piscine orthoreovirus (PRV) - which is associated with kidney and liver damage in Chinook salmon - is continually being transmitted between open-net salmon farms and wild juvenile Chinook salmon in British Columbia waters, according to a new genomics analysis published today in Science Advances. The collaborative study from the University of British Columbia (UBC) and the Strategic Salmon Health Initiative (SSHI) -- a partnership between Fisheries and Oceans Canada (DFO), Genome BC and the Pacific Salmon Foundation -- traces the origins of PRV to Atlantic salmon farms in Norway and finds that the virus is now almost ubiquitous in salmon farms in B.C.