title: Letter: A case of pyrexia of undetermined origin.
mesh_terms: D000740:Anemia / Q000209:etiology; D000818:Animals; D001403:Babesia / Q000302:isolation & purification; D001404:Babesiosis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D005335:Fever of Unknown Origin; D006417:Hematuria / Q000209:etiology; D006801:Humans; D013163:Splenomegaly / Q000209:etiology