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Volume 17, Number 7—July 2011

Research

Epidemiology of Influenza-like Illness during Pandemic (H1N1) 2009, New South Wales, Australia

David J. MuscatelloComments to Author , Margo Barr, Sarah V. Thackway, and C. Raina MacIntyre
Author affiliations: Author affiliations: New South Wales Department of Health, North Sydney, New South Wales, Australia (D.J. Muscatello, M. Barr, S. Thackway); University of New South Wales, Kensington, New South Wales, Australia (D.J. Muscatello, C.R. MacIntyre); University of Wollongong, Wollongong, New South Wales, Australia (M. Barr)

Main Article

Table 1

Influenza-like illness cases, by time period, New South Wales, Australia, July–September 2009*

Period Estimated no., millions Estimated incidence, % (95% CI)
July 0.85 (0.64–1.06) 12.1 (9.1–15.0)
August 0.52 (0.38–0.67) 7.4 (5.3–9.5)
September
0.25 (0.09–0.42)
3.6 (1.2–5.9)
July–September 1.63 (1.33–1.94) 23.1 (18.8–27.4)

*Data from 2,909 New South Wales Population Health Survey respondents. Influenza-like illness defined as fever with cough and fatigue. CI, confidence interval.

Main Article

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