INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2010 - 2011 Season
Week A(H1) A(2009 H1N1) A(H3) A(unable to sub-type) A(Subtyping not performed) B Total # Tested % Positive
40 0 8 19 0 29 23 3670 2.15
41 0 13 34 0 43 31 4045 2.99
42 0 7 35 0 53 43 4176 3.3
43 0 14 53 0 47 49 4210 3.87
44 0 11 64 0 68 99 4665 5.19
45 0 14 65 0 94 162 5426 6.17
46 0 23 117 0 109 230 5675 8.44
47 0 12 143 0 156 260 5520 10.34
48 0 33 188 0 133 253 6091 9.97
49 0 46 338 0 130 301 6154 13.24
50 0 82 544 0 279 509 7407 19.09
51 0 95 774 0 442 641 7787 25.07
52 0 189 970 0 522 636 8821 26.27
01 0 321 1176 0 581 558 10291 25.61
02 0 537 1181 0 674 588 10095 29.52
03 0 823 1380 0 731 708 10857 33.55
04 0 1045 1481 0 917 940 12666 34.6
05 0 1187 1434 0 1083 1122 13472 35.82
06 0 1280 1459 0 1131 1158 14347 35.05
07 0 1411 1482 0 1347 1323 15585 35.69
08 0 1135 1195 0 959 1142 13591 32.6
09 0 912 979 0 712 842 12307 27.99
10 0 663 782 0 486 656 10793 23.97
11 0 461 572 0 364 514 9222 20.72
12 0 256 413 0 262 360 7865 16.41
13 0 183 274 0 159 260 6532 13.41
14 0 90 199 0 91 223 5965 10.11
15 0 46 141 0 60 149 5196 7.62
16 0 25 57 0 29 70 4177 4.33
17 0 13 26 0 29 61 3505 3.68
18 0 7 16 0 8 16 2716 1.73
19 0 4 7 0 7 11 2107 1.38
20 0 0 1 0 2 6 1192 0.76

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