Table 1 Number of tested samples and percentage of positivity for influenza viruses, influenza A (IAV) and influenza B (IBV) viruses by season
Season | Number of samples | Influenza-positive | IAV-positive | IBV-positive | |||
|---|---|---|---|---|---|---|---|
n | % | n | %† | n | %† | ||
2017/2018 | 3,136 | 726 | 23.15 | 194 | 26.72 | 532 | 73.28 |
2018/2019 | 3,555 | 886 | 24.92 | 885 | 99.89 | 1 | 0.11 |
2019/2020 | 2,484 | 369 | 14.86 | 250 | 67.75 | 119 | 32.25 |
2020/2021 | 570 | 0 | / | 0 | / | 0 | / |
2021/2022 | 851 | 294 | 34.55 | 294 | 100 | 0 | 0 |
2022/2023 | 3,866 | 830 | 21.47 | 745 | 89.76 | 85 | 10.24 |
2023/2024 | 6,718 | 1,220 | 18.16 | 1,035 | 84.84 | 185 | 15.16 |
All-season | 21,180 | 4,325 | 20.42 | 3,403 | 78.68 | 922 | 21.32 |