title: Respiratory syncytial virus activity and flu-like illness.
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000453:epidemiology / Q000821:virology; D008297:Male; D008875:Middle Aged; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology*; D012141:Respiratory Tract Infections / Q000453:epidemiology* / Q000382:microbiology / Q000821:virology; D014852:Wales / Q000453:epidemiology