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in general the diseases may be acute and severe or mild. The severe disease is characterized by high fever, nasal discharge, jaundice, petechiation of mucosae, enlargement of the spleen and lymph nodes, enlargement of the kidneys and transient hemoglobinuria. Diagnosis is based on finding protozoa in the blood or in the lymph nodes. A feature, considered to be diagnostic is the presence of Koch's blue bodies or spots, lymphocytes containing macroschizonts, and detectable in smears stained with common blood-stain. See also east coast fever, corridor disease.