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 2859 6 24 1723 18 19498 23.77
39 4 3847 7 24 1863 17 20564 28.02
40 1 6121 2 17 2043 20 24564 33.4
41 2 8628 0 17 2211 18 29035 37.46
42 2 9735 2 27 2342 30 31866 38.09
43 1 7738 2 38 2007 19 27989 35.03
44 3 6083 3 21 1461 30 24859 30.58
45 1 4629 1 22 1155 11 21720 26.79
46 1 2715 0 21 723 13 18196 19.09
47 1 1408 3 9 448 7 13199 14.21
48 1 997 0 11 324 16 13069 10.32
49 1 610 3 7 190 4 11287 7.22
50 0 480 3 6 179 10 10578 6.41
51 3 251 0 1 141 5 8540 4.7
52 0 285 1 1 135 8 9577 4.49
01 0 266 0 3 92 8 9523 3.87
02 1 261 2 2 119 12 8616 4.61
03 0 317 1 2 125 3 8552 5.24
04 0 268 3 0 122 9 8542 4.71
05 0 290 0 0 108 6 8416 4.8
06 0 238 0 0 114 9 8205 4.4
07 0 260 0 0 114 6 8397 4.53
08 0 316 1 0 103 3 7991 5.29
09 0 338 0 0 102 5 7588 5.86
10 0 359 0 0 101 14 7473 6.34
11 0 247 1 0 83 4 6336 5.29
12 0 172 1 0 57 9 5507 4.34
13 0 157 1 0 63 5 5135 4.4
14 0 94 1 0 30 0 4406 2.84
15 0 55 1 0 20 2 3851 2.03
16 0 16 2 0 27 6 3634 1.4
17 0 13 0 0 13 8 3491 0.97
18 0 18 1 0 9 0 2769 1.01
19 0 5 1 0 10 2 2191 0.82
20 0 2 0 0 0 0 1127 0.18

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