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 2449 0.69
41 4 4 6 5 2447 0.78
42 12 3 15 4 2505 1.36
43 22 2 20 14 2653 2.19
44 9 1 19 3 2666 1.2
45 8 2 24 8 3040 1.38
46 5 0 8 3 1772 0.9

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