Affects: Dogs
Rangelia is a genus of parasitic alveolates of the phylum Apicomplexa.
Clinical Features: The disease caused by infection with this parasite is known as rangeliosis. In Brazil it is also known as nambi-uvú (bleeding ears), peste de sangue (bleeding plague) and febre amarela dos cães (yellow fever of dogs).
Presentation: The clinical manifestations of this disease are anaemia, jaundice, fever, hepatomegaly, splenomegaly, lymphadenopathy, haematochezia and persistent bleeding from the nose, oral cavity and the tips, margins and outer surface of the pinnae. Other features include lethargy, loss of appetite, weakness, weight loss, dyspnoea, petechiae and haematemesis.
Diagnosis: Diagnosis may be made by demonstrating the organism in the bone marrow or by serology.
Treatment: Treatment with diminazene aceturate has been shown to be effective.