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 4920 6.89
44 0 4 181 0 73 151 5150 7.94
45 0 5 265 0 114 230 6131 10.01
46 0 8 366 0 210 262 6364 13.32
47 0 7 586 0 406 360 7112 19.11
48 0 14 920 0 532 461 8739 22.05
49 0 38 1733 0 978 674 11466 29.85
50 0 49 2577 0 1141 823 13896 33.03
51 0 54 3535 0 1251 1097 15675 37.88
52 0 79 3738 0 1532 1161 16955 38.4
01 0 85 3658 0 1665 1106 18379 35.44
02 0 98 3897 0 1801 1156 20328 34.2
03 0 114 3125 0 1650 1093 19516 30.65
04 0 129 2383 0 1543 1112 17391 29.71
05 0 123 1890 0 961 1103 15197 26.83
06 0 122 1184 0 719 1100 13673 22.86
07 0 69 806 0 496 1086 11946 20.57
08 0 76 558 0 367 1135 10795 19.79
09 0 57 405 0 295 1091 9879 18.71
10 0 67 311 0 205 1097 9292 18.08
11 0 46 211 0 195 1045 9055 16.53
12 0 35 173 0 137 924 8172 15.53
13 0 37 113 0 93 764 6994 14.4
14 0 31 120 0 102 645 6491 13.83
15 0 45 67 0 64 468 5959 10.81
16 0 28 74 0 46 311 5357 8.57
17 0 33 61 0 46 240 4675 8.13
18 0 15 54 0 29 204 4457 6.78
19 0 12 36 0 27 159 4035 5.8
20 0 11 24 0 20 127 3733 4.88
21 0 13 18 0 21 112 3650 4.49
22 0 14 14 0 28 94 3267 4.59
23 0 11 12 0 29 83 3253 4.15
24 0 21 12 0 32 62 2946 4.31
25 0 27 11 0 32 54 2900 4.34
26 0 34 5 0 22 28 2665 3.56
27 0 13 13 0 26 25 2344 3.46
28 0 17 29 0 40 14 2436 4.11
29 0 17 13 0 28 14 2305 3.17
30 0 14 11 0 29 10 2066 3.15
31 0 20 13 0 31 20 2263 3.8
32 0 26 11 0 26 12 2219 3.38
33 0 13 3 0 32 10 1916 3.03
34 0 9 4 0 41 3 2135 2.72
35 0 38 4 0 67 10 2485 4.79
36 0 11 4 0 72 11 2457 3.99
37 0 10 2 0 58 3 2401 3.04

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