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        INFLUENZA VIRUSES ISOLATED BY
        WHO/NREVSS Collaborating Laboratories
        2007 - 2008 Season
        Week A(H1) A(H3) A(Unk) B Total # Tested % Positive
        40 6 1 20 4 2253 1.38
        41 12 3 22 1 2458 1.55
        42 7 2 28 1 2862 1.33
        43 7 1 27 4 3025 1.29
        44 8 0 53 10 3401 2.09
        45 6 9 47 9 3649 1.95
        46 17 4 55 0 3939 1.93
        47 34 2 89 12 3901 3.51
        48 39 11 50 12 4424 2.53
        49 29 10 112 19 4255 4
        50 38 14 114 25 4572 4.18
        51 52 19 157 40 4781 5.61
        52 46 11 221 53 5682 5.83
        01 36 14 225 55 4360 7.57
        02 60 17 166 40 2880 9.83

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