Table 6.
Estimated number of influenza-associated excess all-cause deaths by age group and epidemic season in Portuguese public hospitals between 2008/2009 and 2017/2018
| Season | Age groups (in years) 95% confidence interval | |||||||
|---|---|---|---|---|---|---|---|---|
| 0–4 | 5–18 | 19–49 | 50–64 | 65–74 | ≥ 75 | ≥ 65 | All ages | |
| 2008/2009 | 9 (− 3; 20) | 3 (− 6; 13) | 112 (65; 159) | 75 (2; 150) | 374 (279; 462) | 2571 (2099; 3062) | 2966 (2433; 3513) | 3301 (2661; 3921) |
| 2009/2010 | 8 (− 4; 20) | – | 72 (28; 118) | 124 (56; 196) | 28 (− 57; 119) | – | – | 92 (− 516; 730) |
| 2010/2011 | 7 (− 4; 18) | 11 (3; 20) | 161 (110; 215) | 144 (64; 223) | 211 (117; 307) | – | 146 (− 489; 761) | 451 (− 288; 1173) |
| 2011/2012 | 21 (10; 32) | 6 (− 2; 15) | – | 173 (97; 255) | 362 (261; 460) | 3248 (2731; 3847) | 3634 (3048; 4314) | 3673 (3044; 4420) |
| 2012/2013 | 8 (− 4; 21) | – | 91 (37; 147) | 186 (103; 282) | 103 (− 9; 227) | 925 (267; 1628) | 1045 (314; 1848) | 1188 (425; 2027) |
| 2013/2014 | 9 (− 1; 19) | – | 9 (− 35; 56) | 54 (− 19; 133) | – | – | – | – |
| 2014/2015 | 7 (− 1; 16) | – | 52 (14; 89) | 140 (70; 211) | 399 (315; 493) | 4342 (3858; 4863) | 4737 (4200; 5295) | 5016 (4444; 5648) |
| 2015/2016 | 16 (4; 26) | – | – | 93 (− 2; 181) | – | – | – | – |
| 2016/2017 | 6 (− 2; 15) | 6 (− 1; 14) | 22 (− 20; 61) | 282 (209; 359) | 242 (145; 345) | 3897 (3336; 4489) | 4111 (3499; 4774) | 4586 (3933; 5290) |
| 2017/2018 | 3 (− 9; 16) | – | – | 161 (61; 266) | 272 (142; 408) | 2293 (1575; 3109) | 2651 (1834; 3556) | 3028 (2208; 3990) |
| 9-year meana | 10 (− 1; 20) | 3 (− 9; 10) | 50 (− 8; 101) | 145 (65; 229) | 218 (95; 352) | 1919 (1125; 2694) | 2143 (1259; 3008) | 2345 (1468; 3325) |
| 3-year meanb | 8 (− 3; 19) | 2 (− 11; 10) | 7 (− 68; 51) | 179 (89; 269) | 171 (58; 290) | 2063 (981; 3799) | 2254 (1054; 4165) | 2431 (1382; 4640) |
aIncludes the following seasons: 2008/2009, 2010/2011, 2011/2012, 2012/2013, 2013/2014, 2014/2015, 2015/2016, 2016/2017, 2017/2018. Excludes season 2009/10, since it was affected by the 2009 influenza A (H1N1) pandemic
bIncludes the most recent seasons, namely 2015/2016, 2016/2017, 2017/2018