As the numbers of those sickened with cyclosporiasis reached 495 in the U.S. and 92 in Canada, the only lead appears to be cilantro imported from Mexico.

Cyclospora is a microscopic single-celled parasite that is passed in people’s feces. If it comes in contact with food or water, it can infect the people who consume it. This causes an intestinal illness called cyclosporiasis.

Previous foodborne illness outbreaks of Cyclospora, in Canada and U.S. have been linked to various types of imported fresh produce, such as pre-packaged salad mix, basil, cilantro, berries, mesclun lettuce and snow peas.

To date, no multi-jurisdictional outbreaks have been linked to produce grown in Canada.