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 7163 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 753 196 390 681 31641 12.25
18 460 2265 565 131 551 438 29914 14.74
19 127 1596 161 91 409 115 13952 17.91
20 58 2488 169 85 639 84 13436 26.22
21 23 2584 96 44 421 32 10951 29.22
22 10 3279 56 15 440 21 10920 34.99
23 22 3398 48 18 716 12 10975 38.4
24 13 3564 17 22 988 9 11524 40.03
25 7 2286 26 33 769 7 9758 32.06
26 10 1571 9 25 581 5 8225 26.76
27 2 1482 11 13 519 5 7869 25.82
28 3 1148 9 15 408 3 6986 22.7
29 4 932 7 22 275 2 5800 21.41
30 3 809 7 21 295 1 5433 20.91
31 10 516 2 14 264 3 4246 19.05

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