title: Nosocomial pertussis: possible spread by a hospital visitor.
mesh_terms: D000328:Adult; D003428:Cross Infection / Q000453:epidemiology* / Q000635:transmission; D004196:Disease Outbreaks / Q000453:epidemiology*; D004197:Disease Reservoirs; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009518:New York; D014917:Whooping Cough / Q000453:epidemiology* / Q000635:transmission