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 11 1756 13 16 1063 3 13906 20.58
36 2 2213 5 13 1412 11 16204 22.56
37 5 2539 3 10 1694 5 18272 23.29
38 6 2779 8 24 1704 20 18711 24.27
39 7 3744 7 24 1819 16 19457 28.87
40 3 5780 2 26 1864 20 22169 34.71
41 1 8388 0 22 2046 18 27106 38.64
42 2 9525 2 26 2141 27 29747 39.41
43 1 7618 2 36 1753 22 25817 36.53
44 2 5953 3 20 1320 30 22932 31.96
45 1 4505 1 22 916 11 19697 27.7
46 1 2634 0 20 560 14 16216 19.91
47 1 1345 3 28 335 8 11535 14.91
48 1 907 0 12 220 9 11006 10.44
49 0 553 3 8 131 2 9024 7.72
50 0 369 0 4 114 5 7624 6.45
51 0 147 0 0 87 1 5837 4.03
52 0 92 0 2 63 4 4180 3.85

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