摘要：Understanding the characteristics of available in. uenza or in. uenza-like illness (ILI) surveillance sys-tems is important for seasonal in. uenza surveillance and pandemic preparedness. We compared fi ve in. uenza or ILI data sources in Victoria: notifi cations of laboratory-confi rmed in. uenza to the Victorian Department of Human Services; hospital emergency presentations and hospital admissions; sentinel general practitioner surveillance; and medical locum service surveillance. Seasonal trends for in. uenza and ILI activity were similar for all data sources. Community ILI surveillance, operating as sentinel GP, locum service or hospital emergency department surveillance, in conjunction with notifi cation of laboratory-confi rmed in. uenza, would provide adequate inter-pandemic surveillance for in. uenza in Victoria and, by extension, in any Australian jurisdiction. Other surveillance systems would be needed for early pandemic case or cluster detection, while pandemic monitoring would be better achieved by a more automated system
