title: Emergency department utilization during outbreaks of influenza.
mesh_terms: D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D004636:Emergency Service, Hospital / Q000592:standards* / Q000706:statistics & numerical data; D007251:Influenza, Human / Q000453:epidemiology* / Q000628:therapy*; D014481:United States / Q000453:epidemiology