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U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
Updated Aug. 28, 2020

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
September 29, 2019 – August 22, 2020
Data as of August 27, 2020
National (Baseline: 2.4%)
CDC Week # Sites Reporting ILI 0-4 years ILI 5-24 years ILI 25-49 years ILI 50-64 years ILI 65 years and older Total ILI Total Patient Visits % Unweighted ILI % Weighted ILI
201940 2,911 6,218 7,658 4,827 1,764 1,448 21,915 1,458,234 1.5 1.5
201941 2,942 6,550 7,638 5,148 2,015 1,603 22,954 1,436,748 1.6 1.6
201942 2,966 7,287 8,292 5,548 2,110 1,649 24,886 1,430,800 1.7 1.7
201943 2,997 7,892 9,349 6,080 2,305 1,793 27,419 1,473,831 1.9 1.8
201944 3,005 8,658 10,068 6,143 2,279 1,762 28,910 1,435,369 2.0 2.0
201945 3,021 10,552 12,551 7,182 2,453 1,843 34,581 1,463,192 2.4 2.4
201946 2,990 11,446 13,670 7,905 2,741 1,969 37,731 1,426,902 2.6 2.6
201947 2,986 12,714 17,056 9,138 3,101 2,148 44,157 1,484,894 3.0 2.9
201948 2,992 14,442 14,821 9,209 3,199 2,371 44,042 1,275,141 3.5 3.4
201949 2,995 13,852 16,397 11,947 3,929 2,779 48,904 1,476,208 3.3 3.3
201950 2,957 14,727 21,876 12,820 4,113 2,903 56,439 1,458,713 3.9 3.9
201951 2,925 17,997 29,180 16,225 4,834 3,349 71,585 1,424,356 5.0 5.1
201952 2,916 24,094 34,001 24,612 7,637 5,401 95,745 1,338,582 7.2 7.1
202001 2,969 21,594 23,391 27,655 9,208 6,881 88,729 1,426,511 6.2 5.9
202002 3,001 15,564 22,756 23,633 8,196 5,464 75,613 1,492,090 5.1 4.9
202003 2,991 16,549 29,622 21,403 7,385 4,729 79,688 1,486,892 5.4 5.3
202004 2,994 18,571 35,265 23,657 7,973 4,670 90,136 1,496,468 6.0 6.1
202005 2,991 20,298 44,110 28,887 9,525 5,474 108,294 1,575,341 6.9 6.7
202006 3,001 20,269 45,510 29,821 10,048 5,706 111,354 1,571,081 7.1 6.8
202007 2,964 17,391 36,906 26,426 9,229 5,457 95,409 1,533,387 6.2 6.1
202008 2,980 15,329 28,523 23,189 8,318 5,187 80,546 1,433,035 5.6 5.5
202009 2,941 13,778 25,451 22,112 8,272 5,108 74,721 1,463,968 5.1 5.1
202010 2,909 13,887 26,395 23,906 8,889 5,696 78,773 1,488,953 5.3 5.3
202011 2,840 14,127 27,729 29,660 11,328 6,695 89,539 1,422,639 6.3 5.7
202012 2,802 10,742 17,486 30,804 12,471 6,984 78,487 1,066,576 7.4 6.4
202013 2,730 5,104 8,294 22,396 10,824 6,457 53,075 851,873 6.2 4.9
202014 2,691 2,359 4,852 14,964 8,695 5,380 36,250 750,290 4.8 3.8
202015 2,690 1,461 3,402 9,986 6,039 4,014 24,902 717,475 3.5 2.8
202016 2,669 1,043 2,650 7,421 4,181 2,925 18,220 708,347 2.6 2.1
202017 2,653 896 2,297 6,334 3,288 2,293 15,108 748,758 2.0 1.7
202018 2,623 850 2,095 5,282 2,669 1,894 12,790 789,199 1.6 1.4
202019 2,611 710 1,879 4,586 2,240 1,621 11,036 815,893 1.4 1.2
202020 2,601 785 1,958 4,110 2,170 1,447 10,470 844,519 1.2 1.1
202021 2,931 892 2,213 4,455 2,201 1,616 11,377 1,052,768 1.1 1.0
202022 2,912 798 1,886 3,564 1,871 1,446 9,565 1,073,452 .9 .9
202023 2,889 795 1,958 3,425 1,697 1,403 9,278 1,125,150 .8 .8
202024 2,862 876 2,133 3,437 1,717 1,372 9,535 1,163,891 .8 .9
202025 2,895 998 2,670 4,698 1,981 1,460 11,807 1,236,999 1.0 .9
202026 2,852 1,205 3,472 6,222 2,634 1,894 15,427 1,278,383 1.2 1.2
202027 2,841 1,381 3,936 7,002 3,210 2,219 17,748 1,278,131 1.4 1.3
202028 2,862 1,525 4,041 7,965 3,746 2,621 19,898 1,348,507 1.5 1.4
202029 2,825 1,629 4,036 7,477 3,533 2,413 19,088 1,325,630 1.4 1.3
202030 2,872 1,606 3,504 6,062 3,063 2,127 16,362 1,341,539 1.2 1.2
202031 2,898 1,586 3,461 5,643 2,559 2,094 15,343 1,331,787 1.2 1.2
202032 2,847 1,526 3,194 4,903 2,324 1,892 13,839 1,313,858 1.1 1.1
202033 2,768 1,524 3,024 4,346 2,094 1,703 12,691 1,289,456 1.0 1.0
202034 2,696 1,734 3,165 4,188 1,822 1,611 12,520 1,285,965 1.0 1.0
Totals 1,986,886 59,711,781

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