A primary bacterial infectious disease that results_in infection, has_material_basis_in Borrelia burgdorferi, which is transmitted_by blacklegged tick (Ixodes scapularis) or transmitted_by western blacklegged tick (Ixodes pacificus). The infection has_symptom fever, has_symptom headache, has_symptom fatigue, and has_symptom skin rash called erythema migrans. If left untreated, infection can spread to joints, the heart, and the nervous system. (DO)