Giardia duodenalis, commonly known as “beaver fever,” is a parasite that can infect humans and animals. Where a cat lives and the time of year may also play a role. Researchers found that kittens were more likely to test positive than older cats, and male cats were more likely to be infected than female cats.
Source: ABC News, October 7, 2026. Link. Giardia live in the intestines of infected people and animals and spread through their stool. Only a few parasites are needed to make an individual sick.
Giardia, while prevalent and occasionally problematic, is typically very treatable. Wash your hands, don’t let animals lick your face or your mouth, and keep kids away from litter boxes.”
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