Feline Gastrointestinal Endoparasitism Study Guide

Overview and Clinical Importance

Gastrointestinal endoparasitism is one of the most common health problems affecting cats worldwide, with prevalence rates reaching as high as 45% in some populations. These parasites can be either wormlike organisms (helminths such as roundworms, hookworms, and tapeworms) or single-celled protozoan organisms (such as Giardia, Isospora, and Toxoplasma). Understanding the life cycles, clinical signs, diagnostic methods, and treatment protocols for these parasites is essential for NAVLE success and clinical practice.

Several feline intestinal parasites have significant zoonotic potential, including Toxocara cati (visceral and ocular larva migrans), hookworms (cutaneous larva migrans), and Giardia (giardiasis). This makes accurate diagnosis and appropriate treatment not only important for feline health but also for public health protection.

Roundworms (Ascarids)

Toxocara cati and Toxascaris leonina are the most common intestinal parasites of cats, with prevalence rates of 25-75% in the general population and even higher rates in kittens. T. cati is the more clinically significant species due to its higher prevalence and zoonotic potential.