INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2012 - 2013 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 71 0 10 78 4314 3.76
41 0 7 66 0 25 98 4679 4.19
42 0 4 123 0 47 121 4967 5.94
43 0 3 146 0 49 139 4851 6.95
44 0 4 180 0 73 149 5106 7.95
45 0 5 264 0 114 225 6024 10.09
46 0 8 356 0 211 262 6260 13.4
47 0 7 524 0 406 353 6922 18.64
48 0 16 895 0 504 478 8424 22.47
49 0 31 1539 0 925 629 10700 29.2
50 0 22 1187 0 929 571 9562 28.33

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