Percentage of Visits for Influenza-like Illness
Reported by Sentinel Providers, National Summary 2006-07 and Previous 3 Seasons

CDC Week %ILI 2006-07 %ILI 2005-06 %ILI 2004-05 % ILI 2003-04 %ILI 2002-03 %ILI 2001-02 %ILI 2000-01 %ILI 1999-2000* National baseline
40 1.144 1.199 0.988 0.883 1.23379492 1.4164548 1.014092715 0.951575941 2.1
41 1.146 1.217 1.029 1.025 1.33739142 1.77985725 1.284624695 1.524177459 2.1
42 1.224 1.297 1.173 1.28 1.3240785 1.62448291 1.264758312 0.957044113 2.1
43 1.207 1.344 1.285 1.323 1.49750439 1.78082847 1.356302238 1.619997186 2.1
44 1.31 1.592 1.287 1.764 1.4779102 1.94880346 1.045237817 1.468374262 2.1
45 1.45 1.475 1.433 2.426 1.59108164 1.64150202 1.149345949 1.531319773 2.1
46 1.52 1.615 1.432 2.71 1.49784119 1.91313283 1.433884868 1.675730965 2.1
47 1.889 1.838 1.741 3.714 1.40858148 1.81382689 1.733114443 2.017654072 2.1
48 1.793 1.76 1.574 4.544 1.61556315 1.7620736 1.619837567 2.359158648 2.1
49 1.956 1.941 1.674 5.405 1.46845265 1.53581748 1.741179469 2.714187675 2.1
50 2.374 2.357 1.877 7.419 1.60523179 1.46493436 2.342745577 3.543925174 2.1
51 2.833 2.962 2.39 7.507 2.16898507 1.96581441 2.69805959 5.442321675 2.1
52 2.979 3.264 2.793 7.644 2.55973645 2.20937864 3.88179184 7.115643339 2.1
1 2.37 2.606 2.393 2.896 2.50924059 2.14287994 3.423942847 6.810016753 2.1
2 2.076 2.246 2.522 2.103 1.72855709 1.89843744 3.420731331 5.575094236 2.1
3 2.27 2.355 2.844 1.883 2.0929675 2.83291659 4.446662624 3.818758159 2.1
4 2.769 2.405 3.548 1.771 2.66435438 3.30265016 4.19271454 3.469401479 2.1
5 3.023 2.521 4.608 1.458 2.96833236 3.6089573 4.357740986 2.422366162 2.1
6 3.521 2.656 5.058 1.38 3.25151607 3.43044627 3.73093497 1.90552583 2.1
7 3.539 3.126 5.435 1.303 3.08790157 3.77605016 2.84955724 1.374906828 2.1
8 3.27 3.106 4.492 1.88 3.22599998 3.60672474 2.443908345 1.363301221 2.1
9 2.884 3.168 3.691 0.993 2.47043598 3.21205138 1.887889476 1.516142887 2.1
10 2.624 3.097 3.35 1.03 2.14366573 2.93791567 1.684480284 1.28846435 2.1
11 2.516 2.655 2.798 1.058 2.00558965 2.87021857 1.612821242 0.999912026 2.1
12 2.098 2.421 2.555 0.853 1.98821222 2.3589101 1.493954721 0.945945464 2.1
13 1.847 2.37 2.073 0.749 1.4422985 2.24877891 1.33408063 0.911287042 2.1
14 1.395 1.868 1.649 0.662 1.23568659 2.00442269 0.922726226 0.945307642 2.1
15 1.453 1.464 1.597 0.68 1.20266827 1.37815004 0.783813283 0.680109844 2.1
16 1.14 1.351 1.297 0.635 0.92219063 1.27618998 0.966848159 0.639611672 2.1
17 1.057 1.179 1.249 0.573 0.95019575 1.00329884 0.825412587 0.599744542 2.1
18 0.982 1.092 1.16 0.593 0.70865328 1.17881412 0.590381076 0.576307302 2.1
19 1.027 1.09 1.221 0.589 0.68141247 1.03908439 0.692318568 0.49695018 2.1
20 0.912 0.924 0.991 0.678 0.73046773 0.70605912 0.495040771 0.343263889 2.1
21 0.932 0.913 1.112 0.637 2.1
22 0.958 0.958 1.275 0.81 2.1
23 0.726 0.869 1.168 0.835 2.1
24 0.848 0.79 1.078 0.614 2.1
25 0.81 0.776 1.001 0.514 2.1
26 0.804 0.725 0.972 0.352 2.1
27 0.699 0.767 0.839 0.541 2.1
28 0.652 0.75 0.799 0.581 2.1
29 0.645 0.645 0.87 0.494 2.1
30 0.682 0.635 0.745 0.611 2.1
31 0.626 0.609 0.809 0.533 2.1
32 0.699 0.687 0.693 0.522 2.1
33 0.694 0.616 0.767 0.573 2.1