Volume 16, Number 9—September 2010
Research
All-Cause Mortality during First Wave of Pandemic (H1N1) 2009, New South Wales, Australia, 2009
David J. Muscatello
, Michelle A. Cretikos, and C. Raina MacIntyre
, Michelle A. Cretikos, and C. Raina MacIntyre
Table 3
All-age differences between observed and baseline all-cause death rates* and counts, and predominant influenza virus strains, by year, New South Wales, Australia, January 2003–September 2009
| Year | Crude rate (95% CI) | Standardized† rate (95% CI) | No. (95% CI) | Predominant strain(s) | |
|---|---|---|---|---|---|
| 2003 | 10.0 (7.3 to 12.6) | 11.1 (6.3 to 16.0) | 666 (488 to 843) | A/Fujian/411/2002 (H3N2)-like | |
| 2004 | 7.2 (5.3 to 9.1) | 8.0 (4.5 to 11.6) | 482 (352 to 612) | A/Fujian/411/2002 (H3N2)-like | |
| 2005 | –6.4 (–8.4 to –4.3) | –6.9 (–10.6 to –3.1) | –432 (–571 to –294) | A/California/7/2004 (H3N2)-like | |
| 2006 | –4.3 (–6.4 to –2.2) | –4.5 (–8.3 to –0.6) | –291 (–433 to –149) | B/Malaysia/2506/2004-like (Victoria lineage) | |
| 2007 | 7.3 (5.3 to 9.2) | 7.5 (3.8 to 11.1) | 502 (366 to 638) | A/Brisbane/10/2007 (H3N2)-like, A/Solomon Islands/3/2006 (H1N1)-like | |
| 2008 | 8.6 (6.5 to 10.6) | 8.8 (5.0 to 12.5) | 600 (457 to 742) | B/Florida/4/2006-like (Yamagata lineage) | |
| 2009 | –6.0 (–8.9 to –3.1) | –6.0 (–11.5 to –0.6) | –423 (–630 to –217) | A/California/7/2009 (H3N2)-like, A/Brisbane/10/2007 (H3N2)-like | |
*Rates are per 100,000 population. CI, confidence interval.
†Age standardized by using the 2009 mid-year age-specific population estimates as the standard population.
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