INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2007 - 2008 Season
Week A(H1) A(H3) A(Unk) B Total # Tested % Positive
40 11 2 20 4 2257 1.64
41 11 3 22 1 2486 1.49
42 10 2 28 1 2870 1.43
43 9 2 27 6 3033 1.45
44 8 0 53 10 3425 2.07
45 13 10 47 10 3677 2.18
46 22 4 55 0 3964 2.04
47 32 2 90 12 3954 3.44
48 42 12 50 12 4552 2.55
49 32 10 112 22 4702 3.74
50 49 19 115 27 4977 4.22
51 67 27 160 50 5566 5.46
52 65 20 259 81 7016 6.06
01 74 51 321 104 6496 8.47
02 162 126 537 157 7082 13.87
03 195 181 707 201 7317 17.55
04 200 328 1182 321 8844 22.96
05 240 571 2147 588 12171 29.13
06 239 754 2509 783 13420 31.93
07 179 688 2332 895 12891 31.76
08 153 820 2367 1172 14843 30.4
09 105 665 1768 1173 13518 27.45
10 53 486 1226 1023 12304 22.66
11 57 357 727 730 8600 21.76
12 33 193 458 548 6127 20.11
13 6 61 244 392 3964 17.73

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