title: Pyrexia of unknown origin in HIV infection and the resurgence of syphilis.
authors.forename: S
authors.initials: S
authors.lastname: Allen
authors.forename: M
authors.initials: M
authors.lastname: Nelson
mesh_terms: D000328:Adult; D004196:Disease Outbreaks; D005335:Fever of Unknown Origin / Q000209:etiology*; D015658:HIV Infections / Q000150:complications*; D006801:Humans; D008297:Male; D013587:Syphilis / Q000150:complications* / Q000453:epidemiology*; D006113:United Kingdom / Q000453:epidemiology