INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2004 - 2005 Season
Year/Week (yyyyww) Number of Labs Reporting Total Specimens Tested A(H1N1) A(H3N2) A (subtyping not performed) B Total Isolates Percent Positive
200440 121 1860 0 5 3 4 12 0.65
200441 128 2154 0 10 3 1 14 0.65
200442 136 2412 0 16 12 11 39 1.62
200443 136 2620 0 13 12 7 32 1.22
200444 145 2771 0 19 10 16 45 1.62
200445 134 3074 0 28 10 24 62 2.02
200446 138 3310 0 41 30 21 92 2.78
200447 127 3111 0 18 22 21 61 1.96
200448 142 3826 0 65 40 32 137 3.58
200449 140 3846 0 88 73 32 193 5.02
200450 138 4359 1 114 126 45 286 6.56
200451 141 4509 1 186 290 54 531 11.78
200452 143 5807 0 340 510 123 973 16.76
200501 146 6921 2 405 712 166 1285 18.57
200502 152 6646 2 308 634 182 1126 16.94
200503 142 6948 2 377 892 212 1483 21.34
200504 150 8010 1 514 1045 306 1866 23.30
200505 145 8654 0 687 1214 424 2325 26.87
200506 147 9684 2 640 1451 478 2571 26.55
200507 143 10586 2 692 1398 613 2705 25.55
200508 139 9710 1 524 1135 618 2278 23.46
200509 144 8511 0 228 950 520 1698 19.95
200510 133 7580 0 163 635 418 1216 16.04
200511 135 6540 0 148 489 471 1108 16.94
200512 128 5928 0 103 303 463 869 14.66
200513 126 5134 3 54 167 343 567 11.04
200514 119 3894 0 47 96 212 355 9.12
200515 110 3339 0 14 39 123 176 5.27
200516 112 2933 1 21 26 75 123 4.19
200517 104 2570 0 12 15 42 69 2.68
200518 101 2250 0 10 8 33 51 2.27
200519 100 2136 0 13 5 19 37 1.73
200520 99 1889 0 20 3 16 39 2.06
200521 94 1809 0 9 3 19 31 1.71
200522 96 1682 0 5 3 15 23 1.37
200523 92 1576 0 4 0 8 12 0.76
200524 94 1514 0 3 2 10 15 0.99
200525 84 1229 0 5 1 5 11 0.90
200526 82 1215 0 0 6 1 7 0.58
200527 82 1073 0 1 0 4 5 0.47
200528 83 991 0 0 0 2 2 0.20
200529 78 983 0 0 1 2 3 0.31
200530 82 1124 0 1 0 1 2 0.18
200531 81 1018 0 0 0 0 0 0.00
200532 81 964 0 3 1 0 4 0.41
200533 80 989 1 0 5 0 6 0.61
200534 81 1016 0 2 2 0 4 0.39
200535 80 1054 0 2 3 1 6 0.57
200536 75 1031 0 1 0 0 1 0.10
200537 80 1099 0 4 0 1 5 0.45
200538 81 1280 0 2 0 0 2 0.16
200539 80 1421 0 2 4 1 7 0.49
Total 5930 19 5967 12389 6195 24570 186590 13.17

Regional Map | Top of the page