Cyclosporiasis cases in the state bordering Ontario jumped by more than 500 in a single day, while Quebec numbers jumped by 166%.

The foodborne gastrointestinal illness has shown up in 31 states, and federal health officials say 86 people have been hospitalized.

A gastrointestinal disease caused by Cyclospora that's sickened thousands in the US could already be in Canada, we’re just not detecting it.