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        INFLUENZA VIRUSES ISOLATED BY
        WHO/NREVSS Collaborating Laboratories
        2006 - 2007 Season
        Week A(H1N1) & A(H1N2) A(H3N2) A(Unk) B Total # Tested % Positive
        40 13 2 20 12 1914 2.5
        41 20 1 24 6 1979 2.6
        42 9 2 27 12 2378 2.1
        43 13 1 38 11 2598 2.4
        44 25 1 62 26 3015 3.8
        45 13 0 67 31 3335 3.3
        46 15 0 59 20 3217 2.9
        47 14 1 73 14 3139 3.2
        48 19 1 73 38 3429 3.8
        49 21 0 75 25 2470 4.9

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