Leptospirosis.
D000328:Adult; D004318:Doxycycline / Q000031:analogs & derivatives* / Q000627:therapeutic use; D006801:Humans; D007922:Leptospirosis / Q000175:diagnosis* / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D010400:Penicillin G / Q000627:therapeutic use; D012698:Serologic Tests
D004318:Doxycycline; D010400:Penicillin G