Failure of recommended treatment for secondary syphilis.
D006801:Humans; D007273:Injections, Intramuscular; D010400:Penicillin G / Q000008:administration & dosage*; D010401:Penicillin G Benzathine / Q000008:administration & dosage*; D012008:Recurrence; D013587:Syphilis / Q000188:drug therapy*
D010400:Penicillin G; D010401:Penicillin G Benzathine