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Detection of influenza viruses in respiratory specimens in 2016

Detection of influenza viruses in respiratory specimens in 2016

Week
number

Date

No. of specimen tested

Type A subtype H1

Type A subtype H3

Type A subtype H5

Type A subtype H7

Type A subtype H9

Type B

Type C

No.

%

No.

%

No.

%

No.

%

No.

%

No.

%

No.

%
1 27/12/2015 - 02/01 3124 49 1.57 13 0.42 0 0.00 0 0.00 0 0.00 35 1.12 22 0.70
2 03/01 - 09/01 3204 85 2.65 10 0.31 0 0.00 0 0.00 0 0.00 46 1.44 25 0.78
3 10/01 - 16/01  3096 102 3.29 13 0.42 0 0.00 0 0.00 0 0.00 51 1.65 15 0.48
4 17/01 - 23/01 3280 161 4.91 13 0.40 0 0.00 0 0.00 0 0.00 56 1.71 10 0.30
5 24/01 - 30/01 3537 228 6.45 11 0.31 0 0.00 0 0.00 0 0.00 67 1.89 21 0.59
6 31/01 - 06/02 3935 407 10.34 55 1.40 0 0.00 0 0.00 0 0.00 156 3.96 33 0.84
7 07/02 - 13/02 4544 708 15.58 59 1.30 0 0.00 1 0.02 0 0.00 244 5.37 36 0.79
8 14/02 - 20/02 4896 783 15.99 52 1.06 0 0.00 0 0.00 0 0.00 336 6.86 45 0.92
9 21/02 - 27/02 4959 850 17.14 55 1.11 0 0.00 0 0.00 0 0.00 370 7.46 39 0.79
10 28/02 - 05/03 5110 739 14.46 45 0.88 0 0.00 0 0.00 0 0.00 504 9.86 33 0.65
11 06/03 - 12/03 4651 474 10.19 25 0.54 0 0.00 0 0.00 0 0.00 506 10.88 31 0.67
12 13/03 - 19/03 4247 315 7.42 20 0.47 0 0.00 1 0.02 0 0.00 441 10.38 9 0.21
13 20/03 - 26/03 3241 273 8.42 18 0.56 0 0.00 0 0.00 0 0.00 367 11.32 31 0.96
14 27/03 - 02/04 5273 372 7.05 30 0.57 0 0.00 0 0.00 0 0.00 572 10.85 27 0.51
15 03/04 - 09/04 4159 271 6.52 22 0.53 0 0.00 0 0.00 0 0.00 411 9.88 23 0.55
16 10/04 - 16/04 4070 293 7.20 19 0.47 0 0.00 0 0.00 0 0.00 349 8.57 24 0.59
17 17/04 - 23/04 4116 247 6.00 25 0.61 0 0.00 1 0.02 0 0.00 343 8.33 24 0.58
18 24/04 - 30/04 4342 197 4.54 27 0.62 0 0.00 0 0.00 0 0.00 377 8.68 15 0.35
19 01/05 - 07/05 4017 150 3.73 20 0.50 0 0.00 0 0.00 0 0.00 266 6.62 24 0.60
20 08/05 - 14/05 3435 96 2.79 21 0.61 0 0.00 0 0.00 0 0.00 196 5.71 14 0.41
21 15/05 - 21/05 4530 88 1.94 22 0.49 0 0.00 0 0.00 0 0.00 249 5.50 27 0.60
22 22/05 - 28/05 3783 35 0.93 22 0.58 0 0.00 0 0.00 0 0.00 157 4.15 23 0.61
23 29/05 - 04/06 3806 26 0.68 19 0.50 0 0.00 0 0.00 0 0.00 75 1.97 14 0.37
24 05/06 - 11/06 3304 22 0.67 9 0.27 0 0.00 0 0.00 0 0.00 72 2.18 11 0.33
25 12/06 - 18/06 3262 3 0.09 32 0.98 0 0.00 0 0.00 0 0.00 46 1.41 13 0.40
26 19/06 - 25/06 3455 6 0.17 46 1.33 0 0.00 0 0.00 0 0.00 45 1.30 7 0.20
27 26/06 - 02/07 2982 3 0.10 106 3.55 0 0.00 0 0.00 0 0.00 38 1.27 13 0.44
28 03/07 - 09/07 3087 3 0.10 79 2.56 0 0.00 0 0.00 0 0.00 29 0.94 4 0.13
29 10/07 - 16/07 3236 1 0.03 82 2.53 0 0.00 0 0.00 0 0.00 18 0.56 9 0.28
30 17/07 - 23/07 3206 1 0.03 106 3.31 0 0.00 0 0.00 0 0.00 16 0.50 5 0.16
31 24/07 - 30/07 3091 5 0.16 102 3.30 0 0.00 0 0.00 0 0.00 15 0.49 5 0.16
32 31/07 - 06/08 3035 6 0.20 115 3.79 0 0.00 0 0.00 0 0.00 7 0.23 6 0.20
33 07/08 - 13/08 3045 6 0.20 104 3.42 0 0.00 0 0.00 0 0.00 17 0.56 2 0.07
34 14/08 - 20/08 2845 4 0.14 112 3.94 0 0.00 0 0.00 0 0.00 13 0.46 2 0.07
35 21/08 - 27/08 3066 6 0.20 212 6.91 0 0.00 0 0.00 0 0.00 10 0.33 5 0.16
36 28/08 - 03/09 3025 6 0.20 202 6.68 0 0.00 0 0.00 0 0.00 11 0.36 2 0.07
37 04/09 - 10/09 3040 1 0.03 231 7.60 0 0.00 0 0.00 0 0.00 3 0.10 3 0.10
38 11/09 - 17/09 3328 3 0.09 466 14.00 0 0.00 0 0.00 0 0.00 10 0.30 1 0.03
39 18/09 - 24/09 3933 7 0.18 545 13.86 0 0.00 0 0.00 0 0.00 3 0.08 2 0.05
40 25/09 - 01/10 3285 1 0.03 403 12.27 0 0.00 0 0.00 0 0.00 4 0.12 0 0.00
41 02/10 - 08/10 3732 2 0.05 450 12.06 0 0.00 0 0.00 0 0.00 3 0.08 1 0.03
42 09/10 - 15/10 3359 0 0.00 343 10.21 0 0.00 0 0.00 0 0.00 4 0.12 2 0.06
43 16/10 - 22/10 3105 1 0.03 270 8.70 0 0.00 0 0.00 0 0.00 6 0.19 2 0.06
44 23/10 - 29/10 3364 2 0.06 284 8.44 0 0.00 0 0.00 0 0.00 4 0.12 2 0.06
45 30/10 - 05/11 3286 1 0.03 287 8.73 0 0.00 0 0.00 0 0.00 1 0.03 5 0.15
46 06/11 - 12/11 3413 1 0.03 270 7.91 0 0.00 0 0.00 0 0.00 1 0.03 3 0.09
47 13/11 - 19/11 3588 0 0.00 251 7.00 0 0.00 0 0.00 0 0.00 3 0.08 0 0.00
48 20/11 - 26/11 3464 1 0.03 223 6.44 0 0.00 0 0.00 0 0.00 1 0.03 6 0.17
49 27/11 - 03/12 3519 2 0.06 211 6.00 0 0.00 0 0.00 0 0.00 5 0.14 5 0.14
50 04/12 - 10/12 3657 1 0.03 193 5.28 0 0.00 0 0.00 0 0.00 2 0.05 4 0.11
51 11/12 - 17/12 3786 1 0.03 173 4.57 0 0.00 0 0.00 0 0.00 17 0.45 3 0.08
52 18/12 - 24/12 3657 3 0.08 150 4.10 0 0.00 1 0.03 0 0.00 7 0.19 0 0.00
53 25/12 - 31/12 3508 2 0.06 211 6.01 0 0.00 1 0.03 0 0.00 7 0.20 4 0.11
 
Remarks:
1. For specimens received from 10 February 2014 onwards, molecular testing has replaced viral culture. Please interpret the data and trends in light of the enhanced sensitivity of molecular testing, and hence positive detection rates.
2. Figures are subject to minor adjustments.
3. Multiple specimens may have been received for testing from the same patient.