So far 130 E. coli cases have been reported across Alberta, and health officials are trying to determine the cause.

Tests have revealed that this particular strain isn’t found outside the Alberta environment, meaning whatever is making people sick was produced or grown in the province.

“It does seem to be isolated to the Alberta environment,” says Dr. Chris Sikora, medical officer of health for Alberta Health Services. “This particular strain is not common, and seems to be isolated to the Alberta context.”