Table 7.
Estimated number of influenza-associated excess all-cause deaths per 100,000 people 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 | 1.8 (− 0.6;3.9) | 0.2 (− 0.4;0.8) | 2.4 (1.4;3.5) | 3.8 (0.1;7.6) | 36.9 (27.5;45.5) | 285.9 (233.5;340.6) | 154.9 (127.1;183.4) | 31.2 (25.2;37.1) |
| 2009/2010 | 1.5 (− 0.7;3.9) | – | 1.6 (0.6;2.6) | 6.2 (2.8;9.8) | 2.8 (− 5.6;11.6) | – | – | 0.9 (− 4.9;6.9) |
| 2010/2011 | 1.4 (− 0.9;3.7) | 0.7 (0.2;1.3) | 3.6 (2.4;4.8) | 7.1 (3.1;11) | 20.5 (11.3;29.8) | – | 7.3 (− 24.5;38.2) | 4.3 (− 2.7;11.1) |
| 2011/ 2012 | 4.3 (2.1;6.5) | 0.4 (− 0.1;1) | – | 8.4 (4.7;12.4) | 35 (25.2;44.4) | 329.8 (277.3;390.7) | 179.9 (150.9;213.6) | 34.9 (29;42) |
| 2012/2013 | 1.8 (− 0.8;4.4) | – | 2.1 (0.8;3.4) | 9 (5;13.6) | 9.8 (− 0.8;21.6) | 92.1 (26.5;162.2) | 50.9 (15.3;90.1) | 11.4 (4.1;19.4) |
| 2013/2014 | 2 (− 0.3;4.1) | – | 0.2 (− 0.8;1.3) | 2.6 (− 0.9;6.3) | – | – | – | – |
| 2014/2015 | 1.7 (− 0.3;3.6) | – | 1.2 (0.3;2.1) | 6.7 (3.3;10) | 36.9 (29.1;45.6) | 417 (370.5;467) | 223 (197.8;249.3) | 48.4 (42.9;54.5) |
| 2015/2016 | 3.6 (0.9;5.9) | – | – | 4.4 (− 0.1;8.6) | – | – | – | – |
| 2016/2017 | 1.5 (− 0.5;3.5) | 0.4 (− 0.1;1) | 0.5 (− 0.5;1.5) | 13.2 (9.8;16.8) | 21.4 (12.9;30.5) | 365.6 (313;421.2) | 187.3 (159.4;217.5) | 44.5 (38.2;51.4) |
| 2017/2018 | 0.7 (− 2.2;3.7) | – | – | 7.5 (2.9;12.4) | 23.7 (12.4;35.5) | 212.3 (145.9;287.9) | 118.9 (82.3;159.6) | 29.4 (21.5;38.8) |
| 9-year meana | 2.1 (− 0.3;4.4) | 0.2 (− 0.6;0.7) | 1.1 (− 0.2;2.3) | 7 (3.1;11) | 20.5 (9;32.9) | 189.2 (111.3;265.8) | 102.5 (60.4;144) | 22.7 (14.1;32) |
| 3-year meanb | 1.9 (− 0.6;4.4) | 0.1 (− 0.8;0.7) | 0.2 (− 1.7;1.3) | 8.4 (4.2;12.6) | 15 (5;25.6) | 192.6 (90.8;354.6) | 102.1 (47;188.5) | 24.6 (13.4;45.1) |
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