Table 3 Cases, deaths, and lethality in the school-aged population by season
Influenza type | Subtype | Indicator | 2009–2010 | 2010–2011 | 2011–2012 | 2012–2013 | 2013–2014 | 2014–2015 | 2015–2016 | 2016–2017 | 2017–2018 | 2018–2019 | TOTAL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | H1N1 | Cases | 212 | 12 | 663 | 33 | 412 | 3 | 328 | 267 | 97 | 30 | 2057 |
Deaths | 4 | 0 | 7 | 0 | 16 | 0 | 18 | 8 | 5 | 0 | 58 | ||
Lethality (%) | 1.89 | 0.00 | 1.06 | 0.00 | 3.88 | 0.00 | 5.49 | 3.00 | 5.15 | 0.00 | 2.82 | ||
H3N2 | Cases | 8 | 230 | 18 | 160 | 114 | 187 | 287 | 138 | 184 | 1 | 1327 | |
Deaths | 0 | 0 | 0 | 1 | 0 | 1 | 4 | 1 | 2 | 0 | 9 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.63 | 0.00 | 0.53 | 1.39 | 0.72 | 1.09 | 0.00 | 0.68 | ||
Not subtyped | Cases | 34 | 236 | 32 | 14 | 15 | 8 | 6 | 10 | 18 | 0 | 373 | |
Deaths | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||
Total A | Cases | 254 | 478 | 713 | 207 | 541 | 198 | 621 | 415 | 299 | 31 | 3757 | |
Deaths | 4 | 0 | 7 | 1 | 16 | 1 | 22 | 9 | 7 | 0 | 67 | ||
Lethality (%) | 1.57 | 0.00 | 0.98 | 0.48 | 2.96 | 0.51 | 3.54 | 2.17 | 2.34 | 0.00 | 1.78 | ||
B | Victoria | Cases | 0 | 0 | 10 | 58 | 37 | 12 | 49 | 16 | 56 | 3 | 241 |
Deaths | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||
Yamagata | Cases | 0 | 0 | 1 | 54 | 6 | 40 | 63 | 80 | 33 | 3 | 280 | |
Deaths | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.50 | 0.00 | 1.25 | 0.00 | 0.00 | 0.71 | ||
Undetermined lineage | Cases | 5 | 111 | 32 | 135 | 71 | 59 | 198 | 149 | 78 | 5 | 843 | |
Deaths | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 0 | 1 | 0 | 6 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.74 | 1.41 | 1.69 | 1.01 | 0.00 | 1.28 | 0.00 | 0.71 | ||
Total B | Cases | 5 | 111 | 43 | 247 | 114 | 111 | 310 | 245 | 167 | 11 | 1364 | |
Deaths | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 1 | 1 | 0 | 8 | ||
Lethality (%) | 0.00 | 0.00 | 0.00 | 0.40 | 0.88 | 1.80 | 0.65 | 0.41 | 0.60 | 0.00 | 0.59 | ||
Total influenza | Cases | 259 | 589 | 756 | 454 | 655 | 309 | 931 | 660 | 466 | 42 | 5121 | |
Deaths | 4 | 0 | 7 | 2 | 17 | 3 | 24 | 10 | 8 | 0 | 75 | ||
Lethality (%) | 1.54 | 0.00 | 0.93 | 0.44 | 2.60 | 0.97 | 2.58 | 1.52 | 1.72 | 0.00 | 1.46 | ||