B.C. fish farms transmit virus to endangered wild Pacific salmon, new study confirms

One common salmon virus introduced to southern B.C. 30 years ago despite assertions from government, industry virus is 'endemic' to province. Further analysis of the PRV genomes in B.C. waters indicate that the number of PRV infections in the region has increased by two orders of magnitude over the last two decades, a pattern that aligns with the regional growth in farms, where nearly all of the fish become infected.