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 4 180 0 73 149 5142 7.9
45 0 5 265 0 114 230 6129 10.02
46 0 8 366 0 210 262 6360 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 13892 33.03
51 0 54 3535 0 1251 1096 15673 37.87
52 0 79 3737 0 1532 1162 16946 38.42
01 0 85 3656 0 1665 1106 18375 35.44
02 0 98 3897 0 1801 1156 20322 34.21
03 0 114 3124 0 1650 1093 19510 30.66
04 0 129 2383 0 1543 1112 17385 29.72
05 0 123 1890 0 961 1103 15194 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 57 405 0 295 1091 9877 18.71
10 0 67 311 0 205 1097 9289 18.09
11 0 46 211 0 195 1044 9048 16.53
12 0 35 173 0 137 924 8165 15.54
13 0 37 113 0 93 764 6987 14.41
14 0 31 120 0 102 645 6486 13.85
15 0 45 67 0 64 467 5956 10.8
16 0 28 74 0 46 311 5354 8.57
17 0 33 61 0 46 240 4673 8.13
18 0 15 54 0 29 204 4449 6.79
19 0 12 36 0 27 159 4031 5.81
20 0 11 24 0 20 127 3728 4.88
21 0 13 18 0 21 112 3648 4.5
22 0 14 14 0 28 94 3262 4.6
23 0 11 12 0 29 80 3246 4.07
24 0 21 12 0 32 62 2938 4.32
25 0 27 10 0 32 54 2896 4.32
26 0 34 5 0 22 28 2664 3.57
27 0 13 12 0 23 25 2337 3.29
28 0 6 27 0 33 14 2410 3.32
29 0 5 12 0 25 14 2283 2.5
30 1 11 8 0 24 9 1963 2.75
31 0 8 12 0 27 20 2125 3.25
32 0 14 10 0 24 8 1976 2.83
33 0 9 2 0 29 6 1610 2.86
34 0 5 2 0 39 1 1556 3.08

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