IHN was also detected on Monday at a Mainstream Canada facility north of Tofino, in Millar Channel. Mainstream has also isolated the site to try to limit the spread of the virus. It says there have been no mass fish die-offs at the farm since the discovery.

In May, the virus was detected at another Mainstream Canada farm in Tofino, this time at a fish farm in Dixon Bay. The company says that given the length of time between the cases, it doesn’t think the virus at Millar Channel came from the Dixon Bay farm.