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

Updated May 22, 2020

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
September 29, 2019 – May 16, 2020
Data as of May 21, 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 6,219 7,658 4,828 1,764 1,449 21,918 1,458,078 1.5 1.5
201941 2,942 6,552 7,637 5,150 2,015 1,604 22,958 1,436,542 1.6 1.6
201942 2,966 7,289 8,296 5,549 2,111 1,651 24,896 1,430,775 1.7 1.7
201943 2,997 7,893 9,354 6,082 2,305 1,794 27,428 1,473,615 1.9 1.8
201944 3,006 8,660 10,076 6,145 2,279 1,764 28,924 1,435,821 2 2
201945 3,021 10,559 12,555 7,180 2,453 1,843 34,590 1,462,857 2.4 2.4
201946 2,989 11,448 13,676 7,909 2,740 1,970 37,743 1,426,621 2.6 2.6
201947 2,985 12,716 17,056 9,138 3,100 2,148 44,158 1,484,804 3 2.9
201948 2,993 14,446 14,821 9,209 3,199 2,372 44,047 1,275,509 3.5 3.4
201949 2,995 13,857 16,400 11,948 3,929 2,780 48,914 1,476,148 3.3 3.3
201950 2,957 14,732 21,883 12,824 4,115 2,905 56,459 1,458,441 3.9 3.9
201951 2,925 18,005 29,186 16,232 4,835 3,349 71,607 1,424,120 5 5.1
201952 2,916 24,101 34,003 24,618 7,637 5,407 95,766 1,338,745 7.2 7.1
202001 2,964 21,627 23,413 27,646 9,207 6,876 88,769 1,425,318 6.2 5.9
202002 2,994 15,535 22,697 23,594 8,180 5,460 75,466 1,487,647 5.1 4.9
202003 2,984 16,527 29,597 21,393 7,366 4,727 79,610 1,483,597 5.4 5.3
202004 2,986 18,565 35,221 23,618 7,953 4,662 90,019 1,492,826 6 6.1
202005 2,983 20,271 44,039 28,837 9,509 5,472 108,128 1,571,804 6.9 6.7
202006 2,992 20,220 45,471 29,793 10,032 5,693 111,209 1,567,246 7.1 6.8
202007 2,955 17,350 36,849 26,387 9,202 5,448 95,236 1,529,457 6.2 6.1
202008 2,970 15,292 28,480 23,151 8,301 5,176 80,400 1,429,197 5.6 5.5
202009 2,925 13,756 25,367 22,043 8,248 5,101 74,515 1,457,254 5.1 5.1
202010 2,892 13,846 26,353 23,845 8,862 5,689 78,595 1,482,216 5.3 5.3
202011 2,819 14,105 27,694 29,620 11,307 6,691 89,417 1,416,579 6.3 5.7
202012 2,773 10,735 17,459 30,759 12,451 6,975 78,379 1,062,550 7.4 6.4
202013 2,684 5,086 8,266 22,336 10,798 6,432 52,918 846,220 6.3 4.9
202014 2,637 2,354 4,834 14,876 8,663 5,363 36,090 741,698 4.9 3.8
202015 2,629 1,451 3,364 9,915 6,007 3,998 24,735 707,263 3.5 2.8
202016 2,612 1,023 2,590 7,344 4,139 2,895 17,991 697,496 2.6 2.1
202017 2,586 888 2,261 6,266 3,244 2,269 14,928 736,966 2 1.7
202018 2,529 847 2,062 5,230 2,642 1,864 12,645 774,376 1.6 1.4
202019 2,463 696 1,842 4,485 2,184 1,583 10,790 784,113 1.4 1.2
202020 2,349 748 1,872 3,951 2,029 1,330 9,930 797,783 1.2 1.1
Totals 1,789,178 42,073,682

 

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