Giardia in Cats: New Study Finds One in 15 Infected
A recent study of more than 150,000 feline samples across North America found that about 6.7 % of cats tested positive for the intestinal parasite Giardia duodenalis, roughly one in fifteen cats overall. Among infected cats, about one in five carried strains that could potentially infect humans.
The research highlighted several groups at higher risk. Kittens, especially neutered ones, were more likely to test positive than adult cats, and male cats showed higher infection rates than females. Cats in the Midwestern United States had higher rates than those in other regions, and the parasite was detected less often during summer, likely because it survives better in cool, moist environments.
Infected cats may develop diarrhea and other digestive problems, though many show no symptoms. Humans can experience frequent diarrhea, stomach discomfort, bloating, and other gastrointestinal symptoms, typically beginning one to two weeks after exposure. Most infections resolve within several weeks, but some people have longer-lasting complications. The Centers for Disease Control and Prevention notes that people are generally unlikely to acquire Giardia directly from their cats or dogs because the types that commonly infect people are often different from those found in pets.
Veterinarians recommend keeping litter boxes clean, washing hands after handling cat waste, and keeping food and water bowls clean. If a cat develops persistent diarrhea or other concerning digestive symptoms, a veterinarian can determine whether testing is necessary. Treatment may involve prescribed medication along with cleaning measures intended to reduce reinfection.
Key takeaways
- About 6.7 % of cats tested positive for Giardia duodenalis.
- Roughly one in fifteen cats overall were infected.
- One in five infected cats carried strains that could infect humans.
- Kittens, neutered kittens, male cats, and Midwestern cats have higher infection rates.
- Clean litter boxes, handwashing, and regular veterinary care help reduce risk.
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Originally reported by iHeartCats. Read the full article.
Cover photo by Jenny Tran via Pexels.
