About two and a half years ago we discovered the nidovirus. We did a study where we looked at the distribution of the nidovirus in the Quinsam system, where we had samples in the hatchery, both of wild fish and hatchery fish. We followed them through their migration out into the marine environment and first observed the nidovirus in wild fish after they'd come in contact with hatchery fish in the early marine environment. Then we saw a rapid decrease in the prevalence of the virus within the first three weeks or four weeks in the ocean, which could be either mortality or because they have cleared the virus. At that particular point, when fish are so stressed in trying to adjust to a new salinity environment, we are very interested in the potential for that being mortality.
On April 26th, 2021. See this statement in context.