Percentage of Visits for Influenza-like Illness
Reported by Sentinel Providers,
National Summary 2005-06 and Previous 3 Seasons
Week %ILI 2005-06 %ILI 2004-05 % ILI 2003-04 %ILI 1999-2000* %ILI 00-01 %ILI 01-02 %ILI 2002-03 National baseline
40 1.199 0.988 0.883 0.951575941 1.0140927 1.416455 1.233794923 2.2
41 1.216 1.029 1.025 1.524177459 1.2846247 1.779857 1.33739142 2.2
42 1.297 1.173 1.28 0.957044113 1.2647583 1.624483 1.324078498 2.2
43 1.344 1.285 1.323 1.619997186 1.3563022 1.780828 1.497504393 2.2
44 1.592 1.287 1.764 1.468374262 1.0452378 1.948803 1.477910195 2.2
45 1.469 1.433 2.426 1.531319773 1.1493459 1.641502 1.591081639 2.2
46 1.608 1.432 2.71 1.675730965 1.4338849 1.913133 1.497841187 2.2
47 1.838 1.741 3.72 2.017654072 1.7331144 1.813827 1.408581478 2.2
48 1.759 1.574 4.539 2.359158648 1.6198376 1.762074 1.615563148 2.2
49 1.941 1.674 5.405 2.714187675 1.7411795 1.535817 1.468452648 2.2
50 2.357 1.877 7.419 3.543925174 2.3427456 1.464934 1.605231788 2.2
51 2.961 2.39 7.507 5.442321675 2.6980596 1.965814 2.168985066 2.2
52 3.264 2.793 7.644 7.115643339 3.8817918 2.209379 2.559736445 2.2
1 2.606 2.393 2.896 6.810016753 3.4239428 2.14288 2.509240587 2.2
2 2.246 2.522 2.101 5.575094236 3.4207313 1.898437 1.728557086 2.2
3 2.355 2.844 1.885 3.818758159 4.4466626 2.832917 2.092967496 2.2
4 2.405 3.548 1.774 3.469401479 4.1927145 3.30265 2.664354377 2.2
5 2.521 4.608 1.458 2.422366162 4.357741 3.608957 2.968332361 2.2
6 2.657 5.058 1.375 1.90552583 3.730935 3.430446 3.251516066 2.2
7 3.123 5.435 1.304 1.374906828 2.8495572 3.77605 3.087901569 2.2
8 3.101 4.492 1.087 1.363301221 2.4439083 3.606725 3.225999976 2.2
9 3.163 3.691 0.988 1.516142887 1.8878895 3.212051 2.470435981 2.2
10 3.092 3.35 1.03 1.28846435 1.6844803 2.937916 2.143665734 2.2
11 2.655 2.798 1.058 0.999912026 1.6128212 2.870219 2.005589653 2.2
12 2.424 2.555 0.852 0.945945464 1.4939547 2.35891 1.988212221 2.2
13 2.367 2.073 0.752 0.911287042 1.3340806 2.248779 1.4422985 2.2
14 1.872 1.649 0.664 0.945307642 0.9227262 2.004423 1.235686592 2.2
15 1.479 1.597 0.681 0.680109844 0.7838133 1.37815 1.202668269 2.2
16 1.339 1.297 0.637 0.639611672 0.9668482 1.27619 0.922190625 2.2
17 1.163 1.249 0.575 0.599744542 0.8254126 1.003299 0.950195751 2.2
18 1.079 1.16 0.591 0.576307302 0.5903811 1.178814 0.708653279 2.2
19 1.041 1.221 0.565 0.49695018 0.6923186 1.039084 0.681412468 2.2
20 0.977 0.991 0.639 0.343263889 0.4950408 0.706059 0.730467732 2.2
21 0.868 2.2
22 0.94 2.2
23 0.915 2.2
24 0.836 2.2
25 0.693 2.2