Volume 17, Number 7—July 2011
Research
Epidemiology of Influenza-like Illness during Pandemic (H1N1) 2009, New South Wales, Australia
David J. Muscatello
, Margo Barr, Sarah V. Thackway, and C. Raina MacIntyre
, Margo Barr, Sarah V. Thackway, and C. Raina MacIntyre
Table 3
Illness outcomes for persons reported influenza–like illness, New South Wales, Australia, July–September 2009*
| Outcome |
Estimated no. persons, millions (95% CI)† |
Proportion, % (95% CI) |
| No. days unable to do usual activities | ||
| 0–3 | 0.83 (0.67–1.00) | 51.3 (41.4–61.1) |
| 4–7 | 0.60 (0.44–0.76) | 36.7 (26.9–46.5) |
| >7 |
0.20 (0.09–0.30) |
12.0 (5.7–18.4) |
| Type of health care sought | ||
| General practice | 0.90 (0.74–1.06) | 55.4 (45.5-65.2) |
| Hospital | 0.08 (0.02–0.15 | 5.2 (1.3–9.2) |
| General practice and hospital‡ | 0.04 (0.01–0.07 | 2.3 (0.5–4.1) |
| Neither general practice nor hospital | 0.68 (0.53–0.83) | 41.7 (32.3–51.1) |
*CI, confidence interval.
†The estimated numbers were obtained by applying the proportions and 95% CIs in this table to the estimated 1.63 million persons with influenza–like illness (Table 1). Standard errors of that estimate were ignored.
‡Because this category overlaps the 2 categories above, total is not 100%.
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