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        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 7 2570 0.7
        41 4 4 6 6 2589 0.77
        42 13 3 16 6 2729 1.39
        43 22 0 24 14 3167 1.89
        44 11 1 21 5 3293 1.15
        45 28 3 23 10 3881 1.65
        46 27 2 19 10 3984 1.46
        47 26 0 38 23 4403 1.98
        48 37 2 48 22 4430 2.46
        49 37 4 62 15 4910 2.4
        50 63 4 73 35 5146 3.4
        51 60 11 81 33 5136 3.6
        52 57 6 119 39 4924 4.49
        53 55 8 106 24 4906 3.93
        01 47 11 156 28 3394 7.13

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