Table 3 Distribution per season of the number of severe acute respiratory infections (SARI) hospitalizations and deaths, SARI Influenza-related hospitalizations and deaths, influenza vaccine effectiveness and vaccine coverage estimates for ≥65 years and < 65 years with a chronic condition
Season features | 2014/15 | 2015/16 | 2016/17 |
|---|---|---|---|
Epidemic period | w1 to w7/2015 | w53/2015 to w7/2016 | w48/2016 to w1/2017 |
Dominant type/subtype | B/Yam | AH1N1pdm09 | AH3 |
SARI Hospitalizations | |||
  ≥ 65 years (n) | 24,720 | 21,913 | 18,724 |
 Chronic condition (n) | 4379 | 4595 | 3231 |
SARI deaths | |||
  ≥ 65 years (n) | 3824 | 3044 | 2942 |
  < 65 years with a chronic condition (n) | 198 | 196 | 137 |
Influenza hospitalizations | |||
  ≥ 65 years | 6742 | 5107 | 6003 |
  < 65 years with a chronic condition | 1204 | 1069 | 1031 |
Influenza deaths | |||
  ≥ 65 years | 1078 | 731 | 909 |
  < 65 years with a chronic condition | 56 | 47 | 42 |
Influenza vaccine effectiveness (IVE %) | |||
  ≥ 65 years[95%CI] | 29.0 [14.7 to 43.4] | 49.1 [26.4 to 71.7] | 42.9 [33.0 to 52.8] |
  < 65 years [95%CI] | 46.1 [20.9 to 71.3] | 53.0 [34.9 to 71.1] | 58.9 [38.1 to 79.6] |
Vaccine coverage (VC %) | |||
  ≥ 65 years[95%CI] | 49.8 [41.3 to 58.4] | 50.1 [42.1 to 58.1] | 57.5 [50.8 to 64.1) |
 Chronic condition [95%CI] | 34.2 [28.1 to 40.9] | 32.3 [26.8 to 38.4] | 39.7 [33.7 to 45.9] |