Several cases of the canine parvovirus have been detected in dogs in the Houlton area, the Houlton Police Department announced on Monday .

Canine parvovirus is highly contagious and can be fatal to dogs if left untreated or treated too late, according to the department.

Vaccination can prevent the virus. Puppies and older dogs that are unvaccinated or have compromised immune systems are at greatest risk.

Symptoms include vomiting, diarrhea and extreme lethargy. Dogs with parvo should be quarantined from other dogs, and owners should immediately seek veterinary attention, the department said.

A national parvovirus tracker from the veterinary medicine maker Elanco lists 29 cases in Maine, and as of Monday evening did not show any in Aroostook County.

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