INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2009 - 2010 Season
Week A(H1) 2009 A H1N1 A(H3) A(unable to sub-type) A(Subtyping not performed) B Total # Tested % Positive
35 2 1884 13 16 1087 4 14443 20.81
36 1 2294 6 8 1462 11 16842 22.46
37 5 2617 3 10 1707 5 18726 23.21
38 4 2857 6 24 1723 18 19496 23.76
39 4 3847 7 24 1863 17 20564 28.02
40 1 6121 2 17 2043 19 24563 33.4
41 2 8627 0 17 2211 18 29034 37.46
42 2 9734 2 27 2342 30 31864 38.09
43 1 7738 2 38 2007 19 27988 35.03
44 3 6080 3 21 1460 30 24855 30.57
45 1 4626 1 22 1155 9 21714 26.78
46 1 2712 0 21 723 13 18193 19.07
47 1 1408 3 9 448 7 13199 14.21
48 1 997 0 11 316 9 12978 10.28
49 1 610 3 7 185 3 11195 7.23
50 0 480 3 6 171 6 10472 6.36
51 3 251 0 1 133 3 8435 4.64
52 0 285 1 1 133 8 9453 4.53
01 0 264 0 3 90 5 9366 3.87
02 1 261 2 2 115 11 8451 4.64
03 0 317 1 2 117 3 8369 5.26
04 0 267 3 0 109 6 8340 4.62
05 0 290 0 0 100 4 8241 4.78
06 0 238 0 0 102 7 7961 4.36
07 0 258 0 0 108 6 8175 4.55
08 0 316 1 0 93 3 7797 5.3
09 0 338 0 0 91 2 7306 5.9
10 0 338 0 0 84 11 7021 6.17
11 0 246 1 0 79 2 6019 5.45
12 0 171 1 0 50 4 5249 4.31
13 0 152 1 0 56 3 4670 4.54
14 0 86 1 0 26 0 3819 2.96
15 0 37 0 0 17 2 2870 1.95
16 0 7 1 0 6 2 1332 1.2

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