What are the characteristics of feline cytauxzoonosis?
- Caused by: Cytauxzoon felis
- Location: southern and SE US (MI, AR, OK, TX, MO, LO, FL and mid-Atlantic states)
- Who gets it: outdoor cats Apr-Sept
- Transmission: tick borne
- Pathogenesis: schizogonous phase of infected mononuclear phagocytes. Intraerythrocytic phase (ring shaped orgs seen in RBCs)
- CS: DIC, shock (schizont phase), hemolytic anemia (intra-RBC phase). Usually rapidly fatal with dark urine, dehydration, icterus, pallor, prolonged CRT, hypothermia. Some mild strains recently found
- Dx: CBC (NR anemia, leukopenia, thrombocytopenia), prolonged coagulation times, blood smear
- Txt: High mortality despite treatment. Supportive care, heparin?
- Px: usually (not always!) fatal