Brought to you by Jonathan Wisniewski, Emergency Veterinary Clinic of Tualatin (EVCOT) - EMERGENCY VETERINARY CLINIC INSIDER - Parasitic infection comes from freshwater fish

EVCOT - Jonathan WisniewskiDoes your dog go camping or fishing with you?

Make sure that your pet doesn't get ahold of certain types of fish, which can cause a potentially fatal condition call "Salmon Poisoning Disease" or "Fish Disease."

The disease is most prevalent in the Pacific Northwest, from Northern California to Puget Sound. It's also seen on inland rivers where fish migrate. Salmon and trout are the most commonly infected fish, but there are many other freshwater species affected. The fish must be eaten raw to develop clinical signs.

The disease is caused by a parasitic infection (a liver fluke) that takes 6-10 days to develop clinical signs. Cooking the fish kills the parasite.

Typical signs include fever, depression, anorexia, vomiting, diarrhea (often bloody in character), fever, weight loss and lymph node enlargement.

Diagnosis is made through clinical signs and appropriate history and checking the animal's stool for parasite eggs. Treatment consists of specific antibiotics (doxycycline), IV fluids, nausea medications, and supportive care.

Without treatment, 90 percent of animals will die within two weeks.

Prevention includes close monitoring of dogs when they are out with you at rivers, beaches and lakes. Keep them from eating fish entrails, keep your pet on a leash in high-risk areas, and cook all fish prior to feeding any to pets.

If your pet gets into raw fish, you can start treatment before clinical signs develop, or induce vomiting to prevent a potentially lengthy hospital stay.

Emergency Veterinary Clinic of Tualatin

8250 SW Tonka St.

Tualatin, OR 97052


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