TY - JOUR AU - Muscatello, David J. AU - Barr, Margo AU - Thackway, Sarah V. AU - MacIntyre, C. Raina T1 - Epidemiology of Influenza-like Illness during Pandemic (H1N1) 2009, New South Wales, Australia T2 - Emerging Infectious Disease journal PY - 2011 VL - 17 IS - 7 SP - 1240 SN - 1080-6059 AB - To rapidly describe the epidemiology of influenza-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. KW - data collection KW - population KW - influenza KW - human KW - disease outbreaks KW - viruses KW - influenza-like illness KW - Australia KW - pandemic (H1N1) 2009 KW - research DO - 10.3201/eid1707.101173 UR - https://wwwnc.cdc.gov/eid/article/17/7/10-1173_article ER - End of Reference