title: Failure of recommended treatment for secondary syphilis.
mesh_terms: D000328:Adult; D004334:Drug Administration Schedule; D006801:Humans; D008297:Male; D008581:Meningitis / Q000209:etiology; D010400:Penicillin G / Q000008:administration & dosage* / Q000627:therapeutic use; D010401:Penicillin G Benzathine / Q000008:administration & dosage*; D012008:Recurrence; D013587:Syphilis / Q000188:drug therapy*
chemical_list: D010400:Penicillin G; D010401:Penicillin G Benzathine