The Canine Review

The Canine Review

A Deadly Water Parasite Is Sickening Healthy Dogs, Top Vets Warn

Once considered a Gulf Coast oddity, Heterobilharzia americana, the parasite that causes canine schistosomiasis, is now grabbing the attention of veterinarians in New York City

Jul 31, 2026
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Dr. Kathleen Aicher unveils new research about heterobilharzia americana (canine schistosomiasis) at the ACVIM Forum in Seattle

New research suggests the parasite may be more widespread than previously recognized — and may infect dogs with no known history of swimming in freshwater sources, or other classic risk factors.

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