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Detection of influenza viruses in respiratory specimens in 2015

Detection of influenza viruses in respiratory specimens in 2015

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 28/12/2014 - 03/01 3069 0 0.00 447 14.57 0 0.00 0 0.00 0 0.00 20 0.65 6 0.20
2 04/01 - 10/01 3351 3 0.09 698 20.83 0 0.00 0 0.00 0 0.00 31 0.93 8 0.24
3 11/01 - 17/01 3392 3 0.09 954 28.13 0 0.00 0 0.00 0 0.00 38 1.12 3 0.09
4 18/01 - 24/01 4315 5 0.12 1508 34.95 0 0.00 1 0.02 0 0.00 40 0.93 0 0.00
5 25/01 - 31/01 5187 15 0.29 1947 37.54 0 0.00 0 0.00 0 0.00 40 0.77 6 0.12
6 01/02 - 07/02 4854 7 0.14 1622 33.42 0 0.00 0 0.00 0 0.00 49 1.01 2 0.04
7 08/02 - 14/02 4650 6 0.13 1209 26.00 0 0.00 0 0.00 0 0.00 53 1.14 9 0.19
8 15/02 - 21/02 4049 6 0.15 953 23.54 0 0.00 0 0.00 0 0.00 56 1.38 7 0.17
9 22/02 - 28/02 4714 11 0.23 970 20.58 0 0.00 1 0.02 0 0.00 68 1.44 3 0.06
10 01/03 - 07/03 4145 24 0.58 705 17.01 0 0.00 0 0.00 0 0.00 88 2.12 2 0.05
11 08/03 - 14/03 3800 18 0.47 576 15.16 0 0.00 0 0.00 0 0.00 87 2.29 2 0.05
12 15/03 - 21/03 4093 18 0.44 507 12.39 0 0.00 0 0.00 0 0.00 91 2.22 2 0.05
13 22/03 - 28/03 3640 14 0.38 406 11.15 0 0.00 0 0.00 0 0.00 108 2.97 2 0.05
14 29/03 - 04/04 2767 7 0.25 197 7.12 0 0.00 0

0.00

 0 0.00 84 3.04 2 0.07
15 05/04 - 11/04 4054 11 0.27 283 6.98 0 0.00 0 0.00 0 0.00 140 3.45 5 0.12
16 12/04 - 18/04 3275 3 0.09 144 4.40 0 0.00 0 0.00 0 0.00 117 3.57 3 0.09
17 19/04 - 25/04 3093 5 0.16 153 4.95 0 0.00 0 0.00 0 0.00 120 3.88 3 0.10
18 26/04 - 02/05 2989 14 0.47 111 3.71 0 0.00 0 0.00 0 0.00 107 3.58 1 0.03
19 03/05 - 09/05 2956 11 0.37 90 3.04 0 0.00 0 0.00 0 0.00 80 2.71 6 0.20
20 10/05 - 16/05 2875 9 0.31 106 3.69 0 0.00 0 0.00 0 0.00 78 2.71 3 0.10
21 17/05 - 23/05 2786 9 0.32 133 4.77 0 0.00 0 0.00 0 0.00 75 2.69 5 0.18
22 24/05 - 30/05 2963 4 0.13 185 6.24 0 0.00 0 0.00 0 0.00 95 3.21 5 0.17
23 31/05 - 06/06 3337 0 0.00 393 11.78 0 0.00 0 0.00 0 0.00 109 3.27 3 0.09
24 07/06 - 13/06 3815 3 0.08 632 16.57 0 0.00 0 0.00 0 0.00 116 3.04 3 0.08
25 14/06 - 20/06 3480 8 0.23 780 22.41 0 0.00 0 0.00 0 0.00 109 3.13 4 0.11
26 21/06 - 27/06 4086 9 0.22 882 21.59 0 0.00 0 0.00 0 0.00 92 2.25 7 0.17
27 28/06 - 04/07 3825 18 0.47 895 23.40 0 0.00 0 0.00 0 0.00 82 2.14 1 0.03
28 05/07 - 11/07 3420 9 0.26 623 18.22 0 0.00 0 0.00 0 0.00 52 1.52 3 0.09
29 12/07 - 18/07 3186 5 0.16 413 12.96 0 0.00 0 0.00 0 0.00 44 1.38 3 0.09
30 19/07 - 25/07 2793 5 0.18 244 8.74 0 0.00 0 0.00 0 0.00 38 1.36 2 0.07
31 26/07 - 01/08 2799 3 0.11 155 5.54 0 0.00 0 0.00 0 0.00 29 1.04 3 0.11
32 02/08 - 08/08 2898 7 0.24 154 5.31 0 0.00 0 0.00 0 0.00 30 1.04 3 0.10
33 09/08 - 15/08 2883 2 0.07 106 3.68 0 0.00 0 0.00 0 0.00 46 1.60 0 0.00
34 16/08 - 22/08 2599 2 0.08 99 3.81 0 0.00 0 0.00 0 0.00 41 1.58 2 0.08
35 23/08 - 29/08 2759 2 0.07 107 3.88 0 0.00 0 0.00 0 0.00 24 0.87 3 0.11
36 30/08 - 05/09 2501 0 0.00 51 2.04 0 0.00 0 0.00 0 0.00 13 0.52 1 0.04
37 06/09 - 12/09 2669 0 0.00 57 2.14 0 0.00 0 0.00 0 0.00 8 0.30 3 0.11
38 13/09 - 19/09 2926 3 0.10 37 1.26 0 0.00 0 0.00 0 0.00 13 0.44 3 0.10
39 20/09 - 26/09 2832 1 0.04 26 0.92 0 0.00 0 0.00 0 0.00 7 0.25 5 0.18
40 27/09 - 03/10 2681 2 0.07 24 0.90 0 0.00 0 0.00 0 0.00 11 0.41 3 0.11
41 04/10 - 10/10 2708 6 0.22 10 0.37 0 0.00 0 0.00 0 0.00 11 0.41 0 0.00
42 11/10 - 17/10 2749 0 0.00 20 0.73 0 0.00 0 0.00 0 0.00 5 0.18 2 0.07
43 18/10 - 24/10 2890 1 0.03 13 0.45 0 0.00 0 0.00 0 0.00 9 0.31 3 0.10
44 25/10 - 31/10 2911 5 0.17 15 0.52 0 0.00 0 0.00 0 0.00 4 0.14 10 0.34
45 01/11 - 07/11 2921 2 0.07 17 0.58 0 0.00 0 0.00 0 0.00 11 0.38 10 0.34
46 08/11 - 14/11 2802 11 0.39 9 0.32 0 0.00 0 0.00 0 0.00 13 0.46 5 0.18
47 15/11 - 21/11 2770 2 0.07 4 0.14 0 0.00 0 0.00 0 0.00 10 0.36 6 0.22
48 22/11 - 28/11 2792 15 0.54 7 0.25 0 0.00 0 0.00 0 0.00 15 0.54 8 0.29
49 29/11 - 05/12 3017 8 0.27 6 0.20 0 0.00 0 0.00 0 0.00 10 0.33 14 0.46
50 06/12 - 12/12 2874 4 0.14 7 0.24 0 0.00 0 0.00 0 0.00 10 0.35 14 0.49
51 13/12 - 19/12 3077 14 0.45 11 0.36 0 0.00 0 0.00 0 0.00 21

0.68

 11 0.36
52 20/12 - 26/12 3232 29 0.90 10 0.31 0 0.00 0 0.00 0 0.00 30 0.93 16 0.50
 
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.