title: Rickettsial diseases.
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D003937:Diagnosis, Differential; D006801:Humans; D013781:Texas; D014437:Typhus, Endemic Flea-Borne / Q000453:epidemiology; D014481:United States
chemical_list: D000900:Anti-Bacterial Agents