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

Updated May 29, 2020

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
September 29, 2019 – May 23, 2020
Data as of May 28, 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 2,894 13,846 26,354 23,853 8,865 5,691 78,609 1,482,385 5.3 5.3
202011 2,821 14,105 27,701 29,627 11,312 6,692 89,437 1,416,733 6.3 5.7
202012 2,780 10,743 17,474 30,767 12,454 6,977 78,415 1,063,666 7.4 6.4
202013 2,694 5,098 8,281 22,373 10,813 6,450 53,015 847,778 6.3 4.9
202014 2,647 2,354 4,838 14,894 8,671 5,367 36,124 743,538 4.9 3.8
202015 2,644 1,456 3,374 9,932 6,011 4,000 24,773 709,973 3.5 2.8
202016 2,628 1,027 2,604 7,376 4,155 2,900 18,062 700,162 2.6 2.1
202017 2,601 890 2,269 6,291 3,257 2,274 14,981 739,105 2.0 1.7
202018 2,556 847 2,075 5,242 2,644 1,874 12,682 777,563 1.6 1.4
202019 2,494 699 1,849 4,495 2,190 1,591 10,824 789,561 1.4 1.2
202020 2,420 761 1,897 4,008 2,062 1,370 10,098 814,805 1.2 1.1
202021 2,632 832 2,126 4,195 2,072 1,538 10,763 1,001,307 1.1 1.0
Totals 1,800,533 43,112,253

 

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