I'm sure you've been following the ISA stories over the last few weeks. I think it's the same virulent strain of ISA—I'm not a scientist—that got into Chile and decimated their open net-pen business about three years ago. Apparently they reported another outbreak of ISA in Chile just last month. I think it's been confined to one farm site, and they've harvested that entire farm site as a result.
The scientists in B.C. found ISA in a couple of sockeye smolts up in Rivers Inlet that were tested in the globally certified labs--a couple of them test for ISA in fish--and found to be positive. Subsequent testing by the Canadian Food Inspection Agency basically said, I think, that the samples were degraded but in their estimation in fact were negative.
So you have this same story. Since I've been involved in this issue, there's been this polarized situation, where everybody takes one end of the spectrum or the other and nobody meets in the middle. Closed containment is meant to meet in the middle.