INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2012 - 2013 Season
Week A(H1) A(2009 H1N1) A(H3) A(unable to sub-type) A(Subtyping not performed) B Total # Tested % Positive
40 0 3 70 0 10 78 4343 3.71
41 0 7 67 0 25 98 4715 4.18
42 0 4 126 0 47 121 5008 5.95
43 0 3 148 0 49 139 4912 6.9
44 0 4 181 0 73 151 5150 7.94
45 0 5 265 0 114 230 6129 10.02
46 0 8 366 0 210 262 6361 13.33
47 0 7 586 0 406 360 7106 19.12
48 0 17 990 0 532 495 8880 22.91
49 0 38 1733 0 978 674 11462 29.86
50 0 49 2576 0 1141 823 13891 33.04
51 0 54 3535 0 1251 1097 15674 37.88
52 0 78 3738 0 1532 1161 16945 38.41
01 0 85 3655 0 1665 1106 18374 35.44
02 0 97 3897 0 1801 1156 20321 34.21
03 0 114 3124 0 1650 1093 19510 30.66
04 0 129 2383 0 1543 1112 17386 29.72
05 0 122 1890 0 961 1103 15193 26.83
06 0 122 1184 0 719 1100 13667 22.87
07 0 69 806 0 496 1086 11942 20.57
08 0 76 558 0 367 1135 10794 19.79
09 0 56 405 0 295 1091 9876 18.7
10 0 67 312 0 205 1097 9290 18.09
11 0 46 211 0 195 1044 9048 16.53
12 0 35 173 0 137 923 8163 15.53
13 0 36 113 0 92 758 6855 14.57
14 0 31 120 0 101 645 6444 13.92
15 0 44 67 0 64 465 5928 10.8
16 0 28 73 0 44 311 5321 8.57
17 0 33 61 0 46 240 4634 8.2
18 0 15 54 0 29 204 4426 6.82
19 0 12 36 0 27 160 4012 5.86
20 0 11 24 0 19 126 3681 4.89
21 0 13 18 0 21 110 3605 4.49
22 0 14 14 0 28 92 3190 4.64
23 0 10 12 0 29 78 3148 4.1
24 0 20 12 0 32 62 2828 4.46
25 0 5 8 0 31 47 2647 3.48
26 0 2 0 0 21 11 1720 2.33

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