Publication Details

Muscatello, D. J., Barr, M., Thackway, S. V. & Maclntyre, C. (2011). Epidemiology of influenza-like illness during pandemic (H1N1) 2009, New South Wales, Australia. Emerging Infectious Diseases, 17 (7), 1240-1247.


To rapidly describe the epidemiology of infl uenza-like illness (ILI) during the 2009 winter epidemic of pandemic (H1N1) 2009 virus in New South Wales, Australia, we used results of a continuous population health survey. During July–September 2009, ILI was experienced by 23% of the population. Among these persons, 51% were unable to undertake normal duties for <3 days, 55% sought care at a general practice, and 5% went to a hospital. Factors independently associated with ILI were younger age, daily smoking, and obesity. Effectiveness of prepandemic seasonal vaccine was ≈20%. The high prevalence of risk factors associated with a substantially increased risk for ILI deserves greater recognition.



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