title: Influenza surveillance in England and Wales: November 1990--June 1991.
authors.forename: K J
authors.initials: KJ
authors.lastname: Fern
authors.forename: C A
authors.initials: CA
authors.lastname: Joseph
authors.forename: J M
authors.initials: JM
authors.lastname: Watson
authors.forename: P
authors.initials: P
authors.lastname: Chakraverty
mesh_terms: D003430:Cross-Sectional Studies; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D009980:Influenza A virus; D009981:Influenza B virus; D007251:Influenza, Human / Q000453:epidemiology*; D011159:Population Surveillance; D014852:Wales / Q000453:epidemiology