Percentage of Visits for Influenza-like Illness
Reported by Sentinel Providers, National Summary
2004-05 and Previous 5 Seasons
Week %ILI 1999-2000 %ILI 2000-2001 %ILI 2001-2002 %ILI 2002-2003 % ILI 2003-2004 %ILI 2004-2005 national baseline
40 0.952 1.014 1.416 1.234 0.883 0.988 2.5
41 1.524 1.285 1.780 1.337 1.025 1.029 2.5
42 0.957 1.265 1.624 1.324 1.280 1.173 2.5
43 1.620 1.356 1.781 1.498 1.323 1.285 2.5
44 1.468 1.045 1.949 1.478 1.764 1.287 2.5
45 1.531 1.149 1.642 1.591 2.426 1.433 2.5
46 1.676 1.434 1.913 1.498 2.710 1.433 2.5
47 2.018 1.733 1.814 1.409 3.720 1.741 2.5
48 2.359 1.620 1.762 1.616 4.539 1.574 2.5
49 2.714 1.741 1.536 1.468 5.405 1.674 2.5
50 3.544 2.343 1.465 1.605 7.419 1.877 2.5
51 5.442 2.698 1.966 2.169 7.507 2.390 2.5
52 7.116 3.882 2.209 2.560 7.644 2.793 2.5
1 6.810 3.424 2.143 2.509 2.896 2.393 2.5
2 5.575 3.421 1.898 1.729 2.101 2.522 2.5
3 3.819 4.447 2.833 2.093 1.885 2.844 2.5
4 3.469 4.193 3.303 2.664 1.774 3.548 2.5
5 2.422 4.358 3.609 2.968 1.458 4.606 2.5
6 1.906 3.731 3.430 3.252 1.375 5.054 2.5
7 1.375 2.850 3.776 3.088 1.304 5.437 2.5
8 1.363 2.444 3.607 3.226 1.087 4.493 2.5
9 1.516 1.888 3.212 2.470 0.988 3.687 2.5
10 1.288 1.684 2.938 2.144 1.030 3.346 2.5
11 1.000 1.613 2.870 2.006 1.058 2.794 2.5
12 0.946 1.494 2.359 1.988 0.852 2.532 2.5
13 0.911 1.334 2.249 1.442 0.752 2.025 2.5
14 0.945 0.923 2.004 1.236 0.664 1.597 2.5
15 0.680 0.784 1.378 1.203 0.681 1.540 2.5
16 0.640 0.967 1.276 0.922 0.637 1.257 2.5
17 0.600 0.825 1.003 0.950 0.575 1.234 2.5
18 0.576 0.590 1.179 0.709 0.591 1.204 2.5
19 0.497 0.692 1.039 0.681 0.565 1.330 2.5
20 0.343 0.495 0.706 0.730 0.639 1.240 2.5