Table 1.
Total and excess deaths, and influenza-associated excess mortality (pneumonia/influenza and respiratory/circulatory) for all ages, 1980–2008 in southern Brazil
| Pneumonia and influenza | Respiratory and circulatory | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Year | Total number of deaths | Excess number of deaths | 95% CI | Excess death rate/100 000 | Excess deaths/ total deaths (%) | Total number of deaths | Excess number of deaths | 95% CI | Excess death rate/100 000 | Excess deaths/ total deaths (%) |
| 1980 | 28 661 | 1035 | 408–1661 | 1·3 | 3·6 | 209 424 | 6465 | 3349–9582 | 8·3 | 3·1 |
| 1981 | 27 419 | 347 | 40–654 | 0·4 | 1·3 | 209 393 | 5633 | 2508–8758 | 7·1 | 2·7 |
| 1982 | 27 305 | 1633 | 387–2878 | 2·0 | 6·0 | 208 023 | 0* | 0–0 | 0·0 | 0·0 |
| 1983 | 25 604 | 0* | 0–0 | 0·0 | 0·0 | 217 097 | 6000 | 1177–10 824 | 7·3 | 2·8 |
| 1984 | 27 481 | 2418 | 1449–3388 | 2·9 | 8·8 | 226 344 | 6955 | 3695–10 215 | 8·3 | 3·1 |
| 1985 | 25 710 | 466 | 135–797 | 0·5 | 1·8 | 229 221 | 7377 | 4031–10 724 | 8·7 | 3·2 |
| 1986 | 27 416 | 2012 | 674–3349 | 2·3 | 7·3 | 232 928 | 8354 | 3271–13 437 | 9·6 | 3·6 |
| 1987 | 25 267 | 0* | 0–0 | 0·0 | 0·0 | 231 983 | 2986 | 1249–4723 | 3·4 | 1·3 |
| 1988 | 29 127 | 2726 | 1689–3763 | 3·0 | 9·4 | 252 554 | 18 821 | 11 804–25 838 | 21·0 | 7·5 |
| 1989 | 26 362 | 678 | 326–1030 | 0·7 | 2·6 | 244 139 | 10 850 | 5 504–16 197 | 11·9 | 4·4 |
| 1990 | 28 265 | 2524 | 1453–3595 | 2·7 | 8·9 | 249 017 | 16 395 | 9149–23 641 | 17·7 | 6·6 |
| 1991 | 24 270 | 0* | 0–0 | 0·0 | 0·0 | 236 055 | 2898 | 1050–4745 | 3·1 | 1·2 |
| 1992 | 26 438 | 963 | 230–1696 | 1·0 | 3·6 | 246 826 | 5968 | 2248–9689 | 6·2 | 2·4 |
| 1993 | 29 902 | 3589 | 1724–5454 | 3·7 | 12·0 | 264 014 | 18 881 | 9400–28 362 | 19·4 | 7·2 |
| 1994 | 30 246 | 3353 | 2217–4489 | 3·4 | 11·1 | 264 868 | 15 281 | 9506–21 055 | 15·5 | 5·8 |
| 1995 | 29 463 | 2650 | 1495–3805 | 2·7 | 9·0 | 263 994 | 11 858 | 5986–17 729 | 11·9 | 4·5 |
| 1996 | 28 251 | 3473 | 2307–4640 | 3·4 | 12·3 | 274 042 | 20 409 | 14 484–26 333 | 20·2 | 7·4 |
| 1997 | 24 862 | 1440 | 645–2236 | 1·4 | 5·8 | 267 580 | 12 524 | 6502–18 546 | 12·2 | 4·7 |
| 1998 | 26 362 | 2365 | 1558–3171 | 2·3 | 9·0 | 276 137 | 17 090 | 10 961–23 219 | 16·4 | 6·2 |
| 1999 | 24 044 | 445 | 37–852 | 0·4 | 1·8 | 272 745 | 12 926 | 4674–21 179 | 12·2 | 4·7 |
| 2000 | 23 342 | 426 | 4–847 | 0·4 | 1·8 | 272 251 | 7365 | 3116–11 613 | 6·7 | 2·7 |
| 2001 | 24 000 | 0* | 0–0 | 0·0 | 0·0 | 271 459 | 2678 | 508–4848 | 2·4 | 1·0 |
| 2002 | 26 274 | 445 | 12–879 | 0·4 | 1·7 | 276 835 | 2928 | 728–5127 | 2·6 | 1·1 |
| 2003 | 27 586 | 724 | 285–1164 | 0·6 | 2·6 | 283 182 | 3886 | 1657–6116 | 3·4 | 1·4 |
| 2004 | 29 936 | 1661 | 325–2997 | 1·4 | 5·5 | 293 393 | 13 538 | 4514–22 562 | 11·8 | 4·6 |
| 2005 | 28 124 | 479 | 19–938 | 0·4 | 1·7 | 280 627 | 2905 | 576–5233 | 2·5 | 1·0 |
| 2006 | 33 469 | 1759 | 825–2694 | 1·5 | 5·3 | 293 384 | 9767 | 2655–16 880 | 8·1 | 3·3 |
| 2007 | 34 808 | 1623 | 672–2573 | 1·3 | 4·7 | 295 916 | 7832 | 3005–12 659 | 6·4 | 2·6 |
| 2008 | 35 439 | 0* | 0–0 | 0·0 | 0·0 | 300 707 | 6345 | 1526–11 163 | 5·2 | 2·1 |
CI, Confidence interval.
*
The 95% confidence intervals of modelled influenza excess deaths exceeded the observed number of deaths.