Overview

Feline infectious anemia (FIA) is an infectious disease found in felines, causing anemia and other symptoms. The disease is caused by a variety of infectious agents, most commonly Mycoplasma haemofelis (formerly called Haemobartonella before Haemobartonella and Eperythrozoon species were reclassified as mycoplasmas).

Coinfection often occurs with other infectious agents, including feline leukemia virus (FeLV), feline immunodeficiency virus (FIV), Ehrlichia species, Anaplasma phagocytophilum and Candidatus Mycoplasma haemominutum.

Educational information only. This page is general guidance and is not a substitute for professional veterinary advice. Never give medicines or change treatment without consulting a veterinarian. If your pet is unwell, contact OC Pets or seek emergency care.

Sources (reused under open licences, with thanks): Wikipedia — “Feline infectious anemia” (CC BY-SA 4.0) · Compiled by OC Pets Veterinary Clinic, updated 15-06-2026.