OTTAWA - Health officials are looking into whether caramel apples possibly linked to a Listeria outbreak in the U-S may have been imported into Canada.

The Public Health Agency of Canada says two cases of listeriosis -- one in Ontario and one in Manitoba -- with the same genetic fingerprint seen in the U-S.

The agency says the status of those two people is unknown, and they're looking to determine if they ate packaged caramel apples from the U-S.

The agency also says the risk to Canadians is low.

Listeria can cause severe symptoms that may include headache, poor co-ordination, seizures and neck stiffness.

In the U-S, officials say a California woman whose death was linked to caramel apples was sickened with the same strain of the illness that infected 28 others in 10 states.

Of those, five have died.