title: Letter: Incidence and prevalence.
mesh_terms: D000350:Africa, Central; D005260:Female; D006069:Gonorrhea / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008887:Military Medicine; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology*; D009626:Terminology as Topic