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 4715 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 3529 0 1251 1097 15668 37.85
52 0 78 3673 0 1532 1161 16879 38.18
01 0 85 3639 0 1652 1097 18217 35.53
02 0 97 3890 0 1790 1150 20141 34.39
03 0 114 3123 0 1644 1086 19360 30.82
04 0 129 2381 0 1535 1101 17236 29.86
05 0 122 1888 0 954 1087 14869 27.24
06 0 121 1181 0 711 1084 13379 23.15
07 0 69 801 0 491 1063 11594 20.91
08 0 74 550 0 365 1115 10518 20
09 0 56 403 0 294 1068 9625 18.92
10 0 67 311 0 201 1088 9048 18.42
11 0 46 209 0 192 1023 8789 16.73
12 0 35 171 0 137 902 7918 15.72
13 0 32 98 0 92 733 6646 14.37
14 0 26 113 0 98 623 6108 14.08
15 0 36 53 0 64 440 5597 10.59
16 0 19 44 0 41 255 4902 7.32
17 0 23 25 0 41 143 3869 6
18 0 4 8 0 29 84 3048 4.1

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