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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 June 5, 2020
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This graph displays the percentage of visits for influenza-like-illness (ILI) by age group reported to CDC by the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet).
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U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
September 29, 2019 – May 30, 2020
Data as of June 4, 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 1,458,042 1.5 1.5
201941 2,942 6,552 7,637 5,150 2,015 1,604 22,958 1,436,493 1.6 1.6
201942 2,966 7,289 8,296 5,549 2,111 1,651 24,896 1,430,698 1.7 1.7
201943 2,997 7,893 9,354 6,082 2,305 1,794 27,428 1,473,576 1.9 1.8
201944 3,006 8,660 10,076 6,145 2,279 1,764 28,924 1,435,769 2.0 2.0
201945 3,021 10,559 12,555 7,180 2,453 1,843 34,590 1,462,807 2.4 2.4
201946 2,989 11,448 13,676 7,909 2,740 1,970 37,743 1,426,570 2.6 2.6
201947 2,985 12,716 17,056 9,138 3,100 2,148 44,158 1,484,729 3.0 2.9
201948 2,993 14,446 14,821 9,209 3,199 2,372 44,047 1,275,480 3.5 3.4
201949 2,995 13,857 16,400 11,948 3,929 2,780 48,914 1,476,092 3.3 3.3
201950 2,957 14,732 21,883 12,824 4,115 2,905 56,459 1,458,418 3.9 3.9
201951 2,925 18,005 29,186 16,232 4,835 3,349 71,607 1,424,103 5.0 5.1
201952 2,916 24,101 34,003 24,618 7,637 5,407 95,766 1,338,744 7.2 7.1
202001 2,964 21,627 23,413 27,646 9,207 6,876 88,769 1,425,315 6.2 5.9
202002 2,994 15,535 22,697 23,594 8,180 5,460 75,466 1,487,643 5.1 4.9
202003 2,984 16,527 29,598 21,393 7,366 4,727 79,611 1,483,588 5.4 5.3
202004 2,986 18,565 35,221 23,618 7,953 4,662 90,019 1,492,810 6.0 6.1
202005 2,983 20,271 44,039 28,837 9,509 5,472 108,128 1,571,760 6.9 6.7
202006 2,992 20,220 45,471 29,793 10,032 5,693 111,209 1,567,189 7.1 6.8
202007 2,955 17,350 36,849 26,387 9,202 5,448 95,236 1,529,394 6.2 6.1
202008 2,970 15,292 28,480 23,151 8,301 5,176 80,400 1,429,120 5.6 5.5
202009 2,926 13,756 25,376 22,043 8,248 5,101 74,524 1,457,337 5.1 5.1
202010 2,895 13,847 26,357 23,853 8,865 5,691 78,613 1,482,572 5.3 5.3
202011 2,822 14,105 27,702 29,632 11,313 6,693 89,445 1,416,855 6.3 5.7
202012 2,782 10,743 17,477 30,773 12,460 6,977 78,430 1,063,840 7.4 6.4
202013 2,706 5,105 8,283 22,374 10,814 6,450 53,026 848,752 6.2 4.9
202014 2,659 2,354 4,839 14,894 8,673 5,367 36,127 744,181 4.9 3.8
202015 2,656 1,456 3,374 9,933 6,011 4,000 24,774 710,633 3.5 2.8
202016 2,633 1,028 2,604 7,378 4,155 2,900 18,065 700,642 2.6 2.1
202017 2,609 890 2,269 6,294 3,259 2,275 14,987 740,350 2.0 1.7
202018 2,570 847 2,077 5,248 2,651 1,876 12,699 779,352 1.6 1.4
202019 2,516 701 1,852 4,499 2,193 1,592 10,837 792,404 1.4 1.2
202020 2,488 773 1,937 4,065 2,120 1,409 10,304 829,273 1.2 1.1
202021 2,745 869 2,179 4,329 2,107 1,564 11,048 1,027,071 1.1 1.0
202022 2,633 759 1,818 3,446 1,783 1,374 9,180 1,041,245 .9 .9
Totals 1,810,305 44,202,847

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Last Updated June 5, 2020
Content source: National Center for Immunization and Respiratory Diseases (NCIRD), Division of Viral Diseases