INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2005 - 2006 Season
Year/Week (yyyyww) Number of Labs Reporting Total Specimens Tested A(H1N1) A(H3N2) A (subtyping not performed) B Total Isolates Percent Positive
200540 121 1894 0 6 4 1 11 0.58
200541 121 2191 0 6 4 2 12 0.55
200542 131 2349 0 12 8 5 25 1.06
200543 135 2780 0 6 6 2 14 0.50
200544 141 2890 0 13 7 3 23 0.80
200545 134 3320 1 21 14 7 43 1.30
200546 140 3861 2 18 23 4 47 1.22
200547 132 3268 0 19 30 3 52 1.59
200548 134 4056 1 57 56 2 116 2.86
200549 140 3863 1 126 79 8 214 5.54
200550 139 4618 0 269 125 5 399 8.64
200551 145 5418 1 296 383 11 691 12.75
200552 142 5829 2 336 425 23 786 13.48
200601 143 6417 1 259 468 24 752 11.72
200602 148 6378 4 297 520 22 843 13.22
200603 153 6255 4 285 565 29 883 14.12
200604 147 6732 4 308 714 33 1059 15.73
200605 153 7029 6 314 779 74 1173 16.69
200606 152 7226 9 321 825 142 1297 17.95
200607 154 8105 17 372 1013 184 1586 19.57
200608 152 7948 16 364 1003 242 1625 20.45
200609 147 7978 29 435 942 396 1802 22.59
200610 149 7819 54 411 881 408 1754 22.43
200611 141 6995 40 276 624 441 1381 19.74
200612 142 6444 79 181 498 432 1190 18.47
200613 147 5424 63 134 340 438 975 17.98
200614 128 4459 38 53 202 312 605 13.57
200615 122 4032 24 51 142 241 458 11.36
200616 123 3499 24 30 74 218 346 9.89
200617 121 2675 10 2 53 135 200 7.48
200618 113 2516 7 7 53 128 195 7.75
200619 111 2453 12 0 49 116 177 7.22
200620 112 2399 6 1 41 87 135 5.63
200621 102 2058 9 0 28 93 130 6.32
200622 100 1663 9 0 19 50 78 4.69
200623 92 1444 9 0 8 38 55 3.81
200624 88 1267 3 0 11 11 25 1.97
200625 85 1178 2 0 2 10 14 1.19
200626 78 1017 3 1 2 6 12 1.18
200627 84 907 2 0 4 2 8 0.88
200628 82 914 0 1 6 0 7 0.77
200629 80 917 0 0 9 2 11 1.20
200630 78 863 6 1 8 2 17 1.97
200631 80 943 3 0 16 1 20 2.12
200632 80 899 1 0 9 2 12 1.33
200633 78 862 3 0 7 2 12 1.39
200634 77 898 3 0 9 3 15 1.67
200635 72 907 5 0 8 4 17 1.87
200636 67 881 5 0 8 0 13 1.48
200637 66 1067 13 0 17 1 31 2.91
200638 60 996 22 0 11 2 35 3.51
200639 50 971 13 0 13 3 29 2.99
Total 6012 566 5289 11145 4410 21410 179772 11.91

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