A label from one of the recalled Fresh Express salads shows ingredients came from the U.S. and Mexico. ( Courtesy FDA )

Cases of cyclospora infection linked to Fresh Express salads continue to rise, according to the Centers for Disease Control and Prevention, and Canada is reporting its first cases.

Lab-confirmed cases thought to be linked to iceberg lettuce, carrots or red cabbage in garden salads were 509 in the U.S, as of July 9, according to the CDC. The Canadian Food Inspection Agency on July 8 reported 37 cases in Ontario, Quebec and Newfoundland and Labrador.

Cases in the U.S. are still in eight Midwestern states.

The Food and Drug Administration is continuing an investigation into the source of the illnesses, caused by the Cyclospora parasite. The salads, including private-label bagged garden salads, were processed at Fresh Express’ Streamwood, Ill., facility, according to the FDA.

Fresh Express has recalled salads from the plant containing the three ingredients under investigation, along with Aldi, Giant Eagle, Hy-Vee, Jewel-Osco, ShopRite and Walmart issuing recalls of private label salads.

The Canadian Food Inspection Agency reported on June 28 Fresh Express had recalled products in Canada. They were distributed nationwide by Crescent Multi-Foods, Federated Co-Operatives Ltd., Fresh Express and Walmart Canada Corp., according to the Canadian Agency.

According to a July 9 update from the FDA, the agency continues a traceback investigation to determine the cause and source of the outbreak.

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