Deadly Dog Parasite Discovered in Southern California's Colorado River

For the first time, a dangerous parasite that can cause fatal disease in dogs has been identified in the Colorado River, urging pet owners to be cautious.

• A parasitic worm causing potentially fatal canine schistosomiasis has been found in Southern California, marking its first discovery in the state.
• The parasite, Heterobilharzia americana, was identified near the Arizona border on the banks of the Colorado River, expanding its known range in the U.S.
• UC Riverside researchers conducted the study after local veterinarians reported a cluster of dog illnesses linked to the river.
• Symptoms of canine schistosomiasis include lethargy, loss of appetite, weight loss, vomiting, and bloody diarrhea; early detection and treatment are crucial.
• The parasite primarily affects dogs but can cause skin irritation in humans, known as 'swimmer's itch.'

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