A virus that has killed millions of piglets in the U.S. may have been found in a third province.

The Canadian Swine Health Intelligence Network says a suspected case of the virus (porcine epidemic diarrhea) was detected by a veterinary lab in Prince Edward Island this week.

The agency says the test has been sent to the National Centre of Foreign Animal Disease in Winnipeg for confirmation.

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It adds that investigations have already begun in P.E.I. to find out how the virus arrived on the farm.

There have been 13 confirmed cases in Ontario and one in Manitoba.

The disease poses no risk to human health or safety.

In Ontario and Manitoba systems have been created to isolate the infected pigs at abattoirs and officials expect the same would happen in P.E.I.