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 2666 0.86
42 13 0 3 0 15 6 2798 1.32
43 22 0 0 0 24 14 3261 1.84
44 13 0 3 0 21 6 3392 1.27
45 33 0 2 0 23 11 3990 1.73
46 25 0 2 0 23 12 4217 1.47
47 25 0 1 0 30 25 4608 1.76
48 40 0 1 0 47 20 4726 2.29
49 44 0 6 0 58 17 5450 2.29
50 70 0 9 0 66 41 5887 3.16
51 76 0 19 0 109 59 6156 4.27
52 69 0 12 0 154 43 5923 4.69
53 116 0 19 0 175 47 6405 5.57
01 166 0 27 0 289 78 6805 8.23
02 198 0 22 0 425 104 6948 10.78
03 355 0 45 0 629 187 7766 15.66
04 558 0 78 0 898 367 9153 20.77
05 673 0 52 0 1369 673 11595 23.86
06 827 0 66 0 1375 930 12813 24.96
07 843 0 69 1 1080 916 11732 24.8
08 693 0 58 0 1016 1132 11935 24.29
09 539 0 68 0 889 1117 10689 24.45
10 382 0 68 0 643 1030 9438 22.49
11 356 0 63 0 429 889 8420 20.63
12 263 0 44 0 285 614 7175 16.81
13 118 0 27 0 171 456 5653 13.66
14 98 0 37 1 128 268 4986 10.67
15 38 0 29 1 76 171 4438 7.1
16 44 12 33 3 80 105 3935 7.04
17 675 1303 856 203 407 711 33311 12.47
18 494 2381 711 135 557 443 31587 14.95
19 142 1693 261 91 438 126 15132 18.18
20 72 2587 261 86 642 85 14247 26.2
21 32 2801 261 45 668 38 12063 31.87
22 27 3643 424 18 566 24 12214 38.5
23 29 3900 262 18 800 14 12230 41.07
24 15 4356 215 24 1059 9 13038 43.55
25 9 3091 72 33 788 7 11136 35.92
26 12 2298 38 26 596 5 9405 31.63
27 2 2472 38 13 531 5 9320 32.84
28 3 1939 25 17 423 3 8464 28.47
29 4 1663 14 24 287 3 7262 27.47
30 3 1645 11 22 327 3 7436 27.04
31 10 1095 7 19 420 3 6739 23.06
32 4 997 7 15 259 5 6486 19.84
33 2 958 10 20 391 1 7098 19.47
34 10 951 11 20 536 8 8157 18.83
35 6 705 14 28 332 0 5296 20.49

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