Acute respiratory infections.
D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007251:Influenza, Human / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011019:Pneumonia, Mycoplasma / Q000453:epidemiology; D011159:Population Surveillance; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D014852:Wales / Q000453:epidemiology