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 36 1733 0 979 673 11461 29.85
50 0 49 2572 0 1141 821 13885 33.01
51 0 54 3530 0 1251 1096 15668 37.85
52 0 78 3671 0 1532 1162 16879 38.17
01 0 85 3643 0 1652 1097 18223 35.54
02 0 97 3890 0 1790 1150 20145 34.39
03 0 114 3123 0 1644 1086 19363 30.82
04 0 129 2383 0 1535 1101 17241 29.86
05 0 122 1888 0 954 1087 14875 27.23
06 0 121 1183 0 711 1085 13389 23.15
07 0 69 805 0 492 1072 11666 20.9
08 0 74 557 0 365 1122 10594 19.99
09 0 56 404 0 294 1076 9677 18.91
10 0 67 312 0 201 1091 9111 18.34
11 0 46 211 0 192 1028 8853 16.68
12 0 35 172 0 137 913 7974 15.76
13 0 36 113 0 92 751 6740 14.72
14 0 31 120 0 101 641 6312 14.15
15 0 44 67 0 63 457 5779 10.92
16 0 26 73 0 41 311 5175 8.71
17 0 33 61 0 46 238 4471 8.45
18 0 14 53 0 29 189 4261 6.69
19 0 12 36 0 27 159 3834 6.1
20 0 11 24 0 18 115 3153 5.33
21 0 8 10 0 20 95 2880 4.62
22 0 8 4 0 26 52 1910 4.71

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