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 79 4345 3.75
41 0 7 67 0 25 98 4716 4.18
42 0 4 128 0 47 121 5009 5.99
43 0 3 148 0 49 139 4913 6.9
44 0 4 181 0 73 151 5148 7.94
45 0 5 269 0 114 231 6134 10.09
46 0 8 366 0 210 265 6365 13.37
47 0 8 590 0 406 362 7113 19.2
48 0 17 985 0 532 497 8877 22.88
49 0 36 1729 0 979 678 11461 29.86
50 0 49 2551 0 1141 822 13865 32.91
51 0 54 3507 0 1251 1097 15647 37.76
52 0 78 3673 0 1531 1161 16879 38.17
01 0 84 3640 0 1612 1089 17767 36.16
02 0 96 3889 0 1720 1129 19544 34.97
03 0 113 3122 0 1597 1067 18875 31.25
04 0 128 2380 0 1503 1084 16858 30.22
05 0 122 1892 0 951 1076 14795 27.31
06 0 121 1181 0 706 1051 13258 23.07
07 0 69 796 0 486 1031 11464 20.78
08 0 73 547 0 363 1079 10367 19.89
09 0 49 386 0 289 1039 9446 18.66
10 0 60 293 0 202 1047 8826 18.15
11 0 34 160 0 184 892 7977 15.92
12 0 11 61 0 114 516 5332 13.17

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