| |
n (%)
|
|---|
| |
2012/2013
|
2013/2014
|
2014/2015
|
2015/2016
|
All seasons
|
|---|
|
RT-PCR result
|
N = 520
|
N = 335
|
N = 296
|
N = 597
|
N = 1748
|
|---|
|
RT-PCR result
|
|
Positivea
|
253 (48.7)
|
149 (44.5)
|
155 (52.4)
|
268 (44.9)
|
825 (47.2)
|
|
Negative
|
267 (51.3)
|
186 (55.5)
|
141 (47.6)
|
329 (55.1)
|
923 (52.8)
|
|
Influenza type
|
|
A(H1N1)pdm09
|
155 (61.3)
|
13 (8.7)
|
11 (7.1)
|
182 (67.9)
|
361 (43.8)
|
|
A(H3N2)
|
41 (16.2)
|
100 (67.1)
|
62 (40.0)
|
21 (7.8)
|
224 (27.2)
|
|
B/Yamagata lineage
|
6 (2.4)
|
34 (22.8)
|
66 (42.6)
|
0 (0.0)
|
106 (12.8)
|
|
B/Victoria lineage
|
10 (4.0)
|
2 (1.3)
|
5 (3.2)
|
59 (22.0)
|
76 (9.2)
|
|
A not subtyped
|
5 (2.0)
|
0 (0.0)
|
1 (0.6)
|
2 (0.7)
|
8 (1.0)
|
|
B undetermined lineage
|
36 (14.2)
|
0 (0.0)
|
10 (6.5)
|
4 (1.5)
|
50 (6.1)
|
- Abbreviation: RT-PCR reverse transcription-polymerase chain reaction
- aTest of homogeneity (equal odds) between seasons: p = 0.1176
