INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season
Week A(H1) 2009 A H1N1 A(H3) A(Could Not Subtyped) A(Unk) B Total # Tested % Positive
40 3 0 0 0 8 6 2612 0.65
41 5 0 4 0 8 6 2663 0.86
42 13 0 3 0 15 6 2798 1.32
43 22 0 0 0 20 12 3249 1.66
44 13 0 3 0 21 6 3389 1.27
45 33 0 2 0 23 11 3990 1.73
46 25 0 2 0 23 12 4214 1.47
47 25 0 1 0 30 25 4606 1.76
48 40 0 1 0 47 20 4724 2.29
49 43 0 6 0 58 17 5438 2.28
50 70 0 9 0 66 41 5876 3.17
51 75 0 18 0 108 59 6138 4.24
52 68 0 12 0 154 43 5912 4.69
53 111 0 19 0 175 47 6380 5.52
01 161 0 27 0 289 77 6776 8.18
02 193 0 22 0 421 104 6905 10.72
03 352 0 45 0 624 186 7741 15.59
04 555 0 78 0 893 366 9122 20.74
05 670 0 52 0 1368 673 11576 23.87
06 816 0 66 0 1375 928 12779 24.92
07 840 0 68 1 1080 912 11708 24.78
08 686 0 57 0 1016 1127 11914 24.22
09 524 0 65 0 889 1101 10627 24.27
10 378 0 67 0 643 1024 9414 22.43
11 353 0 62 0 429 886 8403 20.59
12 262 0 44 0 285 610 7160 16.77
13 118 0 27 0 171 453 5641 13.63
14 98 0 37 1 129 268 4982 10.7
15 38 0 29 1 76 171 4430 7.11
16 43 12 33 3 80 105 3919 7.04
17 664 1283 852 200 416 710 33016 12.49
18 491 2369 710 135 558 441 31466 14.95
19 142 1690 259 91 445 125 15090 18.24
20 72 2573 260 86 645 85 14182 26.24
21 32 2791 259 45 685 38 12020 32.03
22 27 3617 424 18 580 24 12153 38.59
23 29 3885 262 18 807 14 12202 41.1
24 15 4340 215 24 1070 9 12992 43.67
25 9 3086 72 32 794 7 11111 36
26 12 2295 38 25 598 5 9384 31.68
27 2 2469 38 13 532 5 9306 32.87
28 3 1935 25 17 425 3 8449 28.5
29 4 1658 14 24 289 3 7247 27.49
30 3 1644 11 22 334 3 7424 27.17
31 10 1094 7 19 429 3 6730 23.21
32 4 998 7 15 283 5 6609 19.85
33 2 966 10 20 416 1 7399 19.12
34 9 1023 12 20 569 8 8927 18.38
35 1 1149 12 29 759 0 10407 18.74
36 2 679 0 0 693 4 7569 18.21

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