Giardiasis
Giardiasis is a diarrheal disease that can affect many species: dogs, cats, and even humans. It’s caused by Giardia, a single-celled parasite that attacks the gastrointestinal tract of infected animals. Among experts, there is some question about the number of Giardia subtypes that can cause disease in animals and the potential of these subtypes to also infect humans. Though humans are susceptible to infection with Giardia, infection by the same subtypes prevalent in animals is thought to be exceedingly rare but remains a point of controversy and investigation. The parasite lives in the intestines of infected animals and humans, and…