The first known Canadian case of whirling disease in fish has been found in Johnson Lake in Banff National Park. Whirling disease affects trout and salmon, and can cause infected fish to swim in a whirling pattern and die prematurely. Access to Johnson Lake is being restricted as officials work to contain an outbreak of whirling disease. He said it's important people don't move fish between bodies of water, and that entrails are disposed of properly. Fish from other bodies of water in Banff National Park are being tested and AEP is sampling fish downstream from the park.

Source: CBC News August 25, 2016 19:03 UTC