Update on syphilis: resurgence of an old problem.
D003937:Diagnosis, Differential; D018450:Disease Progression; D015658:HIV Infections / Q000150:complications; D006801:Humans; D009494:Neurosyphilis; D013587:Syphilis / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology; D013588:Syphilis Serodiagnosis; D014210:Treponema pallidum / Q000302:isolation & purification; D014481:United States / Q000453:epidemiology