INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2009 - 2010 Season
Week A(H1) 2009 A H1N1 A(H3) A(unable to sub-type) B Total # Tested % Positive
35 3 1749 13 16 1063 3 13892 20.49
36 1 2192 5 13 1412 11 16179 22.46
37 5 2512 3 10 1694 5 18228 23.2
38 6 2749 8 24 1703 20 18664 24.16
39 5 3695 7 24 1819 16 19359 28.75
40 1 5779 2 26 1864 19 22165 34.7
41 1 8387 0 22 2046 18 27104 38.64
42 2 9523 2 26 2103 27 29688 39.35
43 1 7615 2 36 1695 22 25705 36.46
44 0 5937 3 20 1265 29 22812 31.8
45 1 4492 1 22 910 11 19656 27.66
46 1 2618 0 20 557 14 16186 19.83
47 1 1339 3 28 331 8 11507 14.86
48 1 897 0 12 216 9 10831 10.48
49 0 544 3 8 131 2 8537 8.06
50 0 332 0 4 100 4 6700 6.57
51 0 83 0 0 76 0 3950 4.03

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