Dog-killing parasite found in portion of Colorado River, scientists warn
SALT LAKE CITY (ABC4) — Scientists are warning dog owners of a potentially fatal dog parasite found in a portion of the Colorado River that runs through California – the furthest west it has ever been found.
The parasite is a flatworm most commonly referred to as a liver fluke. It was known to be exclusive in Texas and other states surrounding the Gulf Coast, though in recent years the parasite has been found migrating into western states.
In 2018, Utah became the furthest western state after an outbreak infected 12 dogs in Moab. At least two dogs died from the infections within weeks of being infected.
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“Dogs can die from this infection, so we are hoping to raise public awareness that it’s there,” said University of California, Riverside nematology professor Adler Dillman. “if you’re swimming in the Colorado River with them, your pets are in peril.”
The worm can cause a disease known as canine schistosomiasis which impacts the liver and intestines of dogs. Dillman explained the worm lays eggs which the immune system tries to deal with. Hard clusters of the immune system eventually form and cause organ failure. Other symptoms include a loss of appetite, vomiting, diarrhea, profound weight loss and signs of liver disease.
Los Angeles County Department of Public Health veterinarian Emily Beeler said if your dog starts showing these symptoms to take them to a vet for immediate care.
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“It’s a good precaution to ask your veterinarian for a simple fecal test,” said Beeler. “Treatment typically involves the use of multiple medications and close monitoring of the dog by a veterinarian.”
While the infection is potentially deadly to our furry loved ones, the parasite is mostly harmless to humans. Dillman explained the flatworm can cause “swimmer’s itch,” an irritating red rash where it penetrates the skin, but it isn’t known to cause infection. Additionally, the parasite is not likely to infect drinking water.
“Compared to other pathogens these worms are fairly large,” said Dillman. “They can easily be filtered out with common water purification strategies.”
The best way to prevent your dog from being infected is to keep them from drinking straight from rivers or public water spaces. Parasite aside, Dillman said there are other chances for disease such as Giardia.
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