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 5 0 4 0 8 6 2665 0.86
42 13 0 3 0 15 6 2801 1.32
43 22 0 0 0 24 14 3257 1.84
44 12 0 3 0 21 5 3384 1.21
45 32 0 2 0 23 11 3992 1.7
46 25 0 2 0 23 12 4214 1.47
47 27 0 1 0 31 23 4605 1.78
48 40 0 1 0 47 24 4734 2.37
49 43 0 6 0 57 14 5444 2.2
50 71 0 9 0 66 37 5894 3.1
51 73 0 19 0 108 56 6147 4.16
52 71 0 12 0 155 51 5929 4.87
53 115 0 19 0 173 48 6408 5.54
01 166 0 27 0 286 83 6803 8.26
02 199 0 22 0 425 97 6945 10.7
03 350 0 45 0 628 187 7753 15.61
04 559 0 78 0 902 363 9156 20.77
05 677 0 53 0 1370 677 11605 23.93
06 818 0 63 0 1374 922 12774 24.87
07 843 0 65 1 1081 908 11714 24.74
08 690 0 59 0 1010 1128 11920 24.22
09 547 0 66 0 887 1115 10684 24.48
10 377 0 65 0 644 1028 9423 22.43
11 357 0 63 0 425 890 8417 20.61
12 260 0 43 0 284 615 7162 16.78
13 116 0 27 0 171 454 5638 13.62
14 101 0 37 1 126 269 4973 10.74
15 39 0 29 1 74 171 4432 7.08
16 44 12 33 3 79 104 3925 7.01
17 634 1223 753 195 390 681 31646 12.27
18 450 2254 535 131 551 437 29407 14.84
19 127 1596 161 91 408 115 13881 18
20 52 2488 167 85 645 84 13435 26.21
21 23 2583 95 44 422 32 10950 29.21
22 10 3279 56 15 440 21 10920 34.99
23 22 3398 48 18 716 12 10974 38.4
24 13 3562 17 22 988 9 11520 40.03
25 7 2284 26 33 770 7 9755 32.06
26 10 1567 9 25 576 5 8174 26.82
27 2 1450 11 12 519 5 7644 26.15
28 2 1126 9 15 406 2 6780 23.01
29 4 832 7 22 276 2 5378 21.25
30 2 556 4 30 234 0 4138 19.96

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