Lethal Dog-Killing Parasite Spreads in California

An invasive dog-killing worm, Heterobilharzia Americana, also known as Liver Fluke, has been found in the waters of the Colorado River in Southern California, posing a threat to pets and wildlife. The parasite's life cycle involves snails as hosts and can lead to canine schistosomiasis, causing inflammation and potential organ failure in dogs. While most cases have been in Texas, 11 cases have been identified in Southern California, prompting the need to restrict dogs' access to affected areas and watch for signs of infection such as lethargy, diarrhea, and weight loss.