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 2191 4 13 1412 11 16177 22.45
37 5 2512 3 10 1694 5 18228 23.2
38 6 2749 8 24 1703 19 18663 24.16
39 4 3693 6 24 1819 15 19354 28.73
40 1 5778 2 26 1864 18 22162 34.69
41 1 8387 0 22 2046 18 27104 38.64
42 2 9518 1 26 2102 24 29676 39.34
43 1 7609 2 36 1695 21 25698 36.44
44 0 5931 3 20 1265 28 22805 31.78
45 1 4484 1 22 891 9 19519 27.71
46 1 2596 0 20 532 13 15755 20.07
47 1 1324 3 28 321 8 11178 15.07
48 1 884 0 12 210 9 10410 10.72
49 0 475 3 8 127 2 7954 7.73
50 0 233 0 4 66 3 4440 6.89

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