DO_infectious_disease_slim gram-negative_bacterial_infectious_disease NCIthesaurus transmitted by has symptom relapsing fever louse-borne relapsing fever UMLS_CUI:C0152061 DOID:13035 MESH:D012061 SNOMEDCT_US_2025_09_01:14683004 NCI:C128426 ICD10CM:A68.0 Relapsing fever, louse-borne disease_ontology A relapsing fever that is characterized by relapsing or recurring episodes of fever, has_material_basis_in Borrelia recurrentis, which is transmitted_by body louse (Pediculus humanus). The infection has_symptom tachypnea, has_symptom tachycardia, has_symptom hepatosplenomegaly and has_symptom lymphadenopathy. ICD9CM:087.0 Pediculus humanus hepatosplenomegaly enlargement of lymph nodes tachycardia tachypnea relapsing fever lymphadenopathy insect borne transmission