Alert for Dog Owners: Dangerous Parasite Detected in Southern California River


In Southern California, a concerning discovery has surfaced, putting our four-legged friends at risk. The culprit? A parasite known as Heterobilharzia Americana, commonly referred to as liver fluke, has made its presence known in the tranquil waters of the Colorado River, specifically around Blythe. This revelation has pet owners and enthusiasts on high alert due to the potential fatal impact on dogs.

The discovery, as reported by UC Riverside News, comes from Adler Dillman, a professor of nematology at UCR, who expressed a pressing need to inform the public. “Dogs can die from this infection, so we are hoping to raise public awareness that it’s there,” Dillman conveyed. His concern underscores the severity of the situation, emphasizing the jeopardy pets face if they come into contact with infected waters. “If you’re swimming in the Colorado River with them, your pets are in peril,” he added, pointing out the risk of recreational activities in these areas.

Heterobilharzia Americana triggers a condition known as granulomatous gastrointestinal and hepatic disease in dogs, a condition documented by the National Library of Medicine. This ailment can lead to severe consequences for our canine companions, disrupting their internal systems and, in dire situations, leading to death. The flatworm responsible for this disease is usually transmitted by specific snail species and is predominantly found in Gulf Coast states, making its appearance in Southern California a noteworthy and alarming event.

For humans, the interaction with this parasite might result in swimmer’s itch—a red, irritating rash that emerges where the parasite penetrates the skin. Thankfully, as Dillman points out, “it’s not able to cause infection” in humans. However, this small consolation does little to alleviate the concern for our pets, who do not share this immunity to the parasite’s more harmful effects.

This situation serves as a critical reminder of the vigilance needed when enjoying natural water bodies with our pets. The health and safety of our furry friends depend on our awareness and the precautions we take to protect them from unseen threats. As we seek to enjoy the beauty and recreation offered by rivers like the Colorado, let’s remember the importance of staying informed about potential risks, especially those that could have fatal consequences for our beloved dogs.

Dog owners and enthusiasts are encouraged to stay updated on the situation and consider alternative locations for water-related activities with their pets. In doing so, we can ensure our four-legged family members remain safe, healthy, and far from harm’s way.