Veterinary Public Health

Pet Health Calendar
Contact Information
Veterinary Public Health Program
313 N Figueroa St. Rm 1127
Los Angeles, CA 90012
Tel (213) 989-7060
Tel: (877) 747-2243
Fax (213) 481-2375
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Salmon Poisoning Disease
What is Salmon Poisoning Disease (SPD)?
SPD is a disease that makes dogs severely ill. Symptoms can include fever, vomiting, diarrhea, bloody diarrhea, lethargy, enlarged lymph nodes, physical collapse and death. Dogs with SPD need to be treated by a veterinarian. Illness usually starts about 5-7 days after the dog eats or licks the infected fish.

SPD is not caused by a poison, it is caused by infection from a bacteria and a parasite together. SPD causes no harm to fish. The parasite (called Nanophyetus) infects trout at a fish farm. Inside these parasites are bacteria (called Neorickettsia). Dogs can catch the illness very easily when they eat raw or undercooked trout. One dog caught the disease after licking the ground where water had dripped off of a trout. This disease is most common in the Pacific Northwest area of the United States.

Do Dogs in Los Angeles County Get Sick with SPD?
Since 2006, at least 15 dogs in Los Angeles County became severely ill after eating or licking parts of raw trout. Two of them died. The others received intensive treatment and survived. The trout had been transported to LA County from the Pacific Northwest for sport fishing.
Dog licking a fish

Do People get Salmon Poisoning Disease?
Humans can get infected with the parasite (Nanophyetus) only if they eat raw fish, or if they do not practice good sanitation in preparing fish. When humans are infected, they experience mostly mild diarrhea. Safe and sanitary fish handling prevents this problem.

What Should I Do?
  • REMEMBER – Dogs can smell fish that have been buried to use as fertilizer! Keep dogs away from buried fish!
  • Fisherman should always use excellent sanitation when cleaning and preparing fish.
  • If your dog has eaten raw fish caught from a local lake and becomes ill, mention the fish to your veterinarian.

More information
Printable version of this page. pdf icon       En Español pdf icon
2007 Alert about local Salmon Poisoning Disease pdf icon

Updated August 17, 2016
Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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