title: Influenza 1969-1970. Incidence in general practice based on a population survey.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004739:England; D005194:Family Practice; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000150:complications / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged