INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season
Week A(H1) A(Novel H1N1) A(H3) A(Could Not Subtyped) A(Unk) B Total # Tested % Positive
40 3 0 0 0 8 6 2606 0.65
41 4 0 4 0 8 6 2633 0.84
42 13 0 3 0 15 6 2746 1.35
43 22 0 0 0 24 14 3198 1.88
44 12 0 3 0 21 5 3320 1.23
45 32 0 2 0 23 11 3921 1.73
46 25 0 2 0 23 12 4146 1.5
47 27 0 1 0 31 23 4540 1.81
48 40 0 1 0 47 24 4636 2.42
49 43 0 6 0 57 14 5356 2.24
50 71 0 9 0 66 37 5788 3.16
51 73 0 19 0 108 56 6057 4.23
52 71 0 12 0 153 51 5830 4.92
53 115 0 19 0 171 48 6314 5.59
01 165 0 27 0 285 82 6700 8.34
02 196 0 22 0 423 96 6790 10.85
03 340 0 44 0 623 186 7600 15.7
04 558 0 77 0 898 359 9013 20.99
05 674 0 52 0 1359 672 11462 24.05
06 815 0 63 0 1337 911 12477 25.05
07 817 0 65 1 1068 894 11501 24.74
08 669 0 59 1 1002 1097 11720 24.13
09 527 0 57 0 882 1086 10485 24.34
10 353 0 63 0 638 1002 9248 22.23
11 346 0 62 0 429 873 8297 20.61
12 257 0 41 0 281 599 6879 17.12
13 107 0 25 7 156 430 5281 13.73
14 87 0 31 1 122 246 4488 10.85
15 37 0 28 0 70 164 3995 7.48
16 39 12 31 3 76 92 3504 7.22
17 487 745 553 193 370 546 21562 13.42
18 334 1160 361 161 806 277 19861 15.6
19 69 823 101 38 291 49 7866 17.43

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