INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2006 - 2007 Season
Week A(H1N1) & A(H1N2) A(H3N2) A(Unk) B Total # Tested % Positive
40 13 2 22 15 2312 2.2
41 20 1 31 9 2493 2.4
42 17 3 32 21 2896 2.5
43 13 1 43 22 3277 2.4
44 25 1 71 42 3787 3.7
45 18 0 84 41 4226 3.4
46 23 0 76 33 4456 3.0
47 21 2 101 28 4421 3.4
48 42 1 105 56 5569 3.7
49 54 2 121 59 5550 4.3
50 104 9 299 117 6528 8.1
51 192 10 383 133 6976 10.3
52 198 14 359 118 6609 10.4
01 125 13 227 84 6343 7.1
02 176 35 278 83 6164 9.3
03 170 40 411 73 5944 11.7
04 291 80 723 131 6573 18.6
05 331 84 1125 179 7409 23.2
06 437 93 1359 353 7927 28.3
07 345 86 1384 349 7936 27.3
08 192 72 1111 344 7161 24.0
09 95 24 618 265 4445 22.5

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