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 71 0 10 79 4345 3.75
41 0 7 67 0 25 98 4716 4.18
42 0 4 128 0 47 121 5009 5.99
43 0 3 148 0 49 139 4912 6.9
44 0 4 181 0 73 151 5150 7.94
45 0 5 269 0 114 231 6134 10.09
46 0 8 366 0 210 265 6364 13.37
47 0 7 591 0 406 362 7113 19.2
48 0 17 992 0 532 497 8884 22.94
49 0 36 1739 0 979 678 11471 29.92
50 0 49 2572 0 1141 822 13885 33.01
51 0 54 3530 0 1251 1096 15668 37.85
52 0 78 3672 0 1532 1162 16880 38.18
01 0 84 3638 0 1653 1097 18217 35.53
02 0 96 3890 0 1791 1150 20141 34.39
03 0 113 3120 0 1645 1086 19357 30.81
04 0 129 2383 0 1535 1100 17237 29.86
05 0 122 1888 0 954 1087 14868 27.25
06 0 121 1181 0 711 1083 13377 23.14
07 0 69 801 0 491 1063 11589 20.92
08 0 74 548 0 365 1114 10512 19.99
09 0 49 392 0 293 1064 9583 18.76
10 0 61 301 0 200 1083 8999 18.28
11 0 41 202 0 191 1018 8733 16.63
12 0 29 159 0 137 894 7849 15.53
13 0 30 96 0 92 728 6570 14.4
14 0 22 93 0 100 524 5652 13.08
15 0 16 18 0 59 261 3802 9.31

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