INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season
Week A(H1) A(H3) A(Unk) B Total # Tested % Positive
40 2 0 9 6 2520 0.67
41 4 4 6 5 2541 0.75
42 12 3 15 5 2667 1.31
43 22 2 20 14 2896 2
44 9 1 19 4 2969 1.11
45 22 2 23 9 3404 1.65
46 24 2 10 9 2626 1.71
47 13 0 26 20 2898 2.04
48 4 2 26 11 2136 2.01

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