INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2007 - 2008 Season
Week A(H1) A(H3) A(Unk) B Total # Tested % Positive
40 6 0 20 4 2248 1.33
41 12 3 22 1 2454 1.55
42 7 2 28 1 2858 1.33
43 7 1 27 4 3023 1.29
44 8 0 53 10 3393 2.09
45 6 9 47 8 3641 1.92
46 17 4 55 0 3722 2.04
47 33 2 87 12 3689 3.63
48 39 11 46 12 4192 2.58
49 24 9 106 18 3828 4.1
50 35 14 106 25 4180 4.31
51 45 18 133 35 4050 5.7
52 39 9 188 45 4939 5.69
01 29 12 133 47 3066 7.21

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