title: Salmonella enteritidis phage type 21b.
mesh_terms: D004196:Disease Outbreaks; D004531:Eggs / Q000382:microbiology; D004739:England / Q000453:epidemiology; D005516:Food Microbiology; D006801:Humans; D012480:Salmonella Infections / Q000453:epidemiology*; D012477:Salmonella enteritidis / Q000302:isolation & purification*; D014852:Wales / Q000453:epidemiology