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 0 979 674 11461 29.86
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 1890 0 954 1089 14883 27.25
06 0 122 1184 0 711 1087 13395 23.17
07 0 69 806 0 492 1074 11673 20.91
08 0 76 558 0 365 1129 10605 20.07
09 0 56 405 0 294 1082 9683 18.97
10 0 67 312 0 201 1091 9111 18.34
11 0 46 211 0 193 1032 8875 16.7
12 0 35 173 0 137 916 7989 15.78
13 0 36 113 0 92 756 6761 14.75
14 0 31 120 0 101 643 6337 14.12
15 0 44 67 0 64 464 5851 10.92
16 0 27 73 0 44 311 5246 8.67
17 0 33 61 0 46 240 4546 8.36
18 0 15 54 0 29 196 4340 6.77
19 0 12 36 0 27 152 3925 5.78
20 0 11 24 0 19 116 3507 4.85
21 0 13 18 0 21 106 3438 4.6
22 0 14 14 0 28 90 2915 5.01
23 0 10 11 0 29 71 2749 4.4
24 0 16 6 0 30 36 1930 4.56

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