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        INFLUENZA VIRUSES ISOLATED BY
        WHO/NREVSS Collaborating Laboratories
        2011 - 2012 Season
        Week A(H1) A(2009 H1N1) A(H3) A(unable to sub-type) A(Subtyping not performed) B Total # Tested % Positive
        40 0 3 11 0 9 9 2674 1.2
        41 0 0 5 0 1 7 2390 0.54
        42 0 1 4 0 8 7 2440 0.82
        43 0 0 4 0 13 4 2370 0.89
        44 0 0 0 0 8 3 1833 0.6

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