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 4313 3.76
41 0 7 67 0 25 98 4685 4.2
42 0 4 127 0 47 121 4975 6.01
43 0 3 147 0 49 139 4860 6.95
44 0 4 180 0 73 151 5110 7.98
45 0 5 269 0 114 230 6039 10.23
46 0 8 359 0 211 262 6270 13.43
47 0 7 553 0 406 360 6988 18.98
48 0 17 946 0 508 485 8531 22.93
49 0 35 1678 0 920 660 10958 30.05
50 0 41 2389 0 1098 723 12937 32.86
51 0 35 2617 0 1048 786 12220 36.71
52 0 25 1209 0 1112 615 9363 31.62

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