Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
UPDATE
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
UPDATE
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.
COVIDView: A Weekly Surveillance Summary of U.S. COVID-19 Activity

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. 21, 2020
Print
Related Pages
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).
resize iconView Larger
U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
September 29, 2019 – August 15, 2020
Data as of August 20, 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 3,000 20,269 45,509 29,821 10,048 5,706 111,353 1,570,924 7.1 6.8
202007 2,963 17,391 36,899 26,426 9,229 5,457 95,402 1,533,225 6.2 6.1
202008 2,979 15,329 28,521 23,189 8,318 5,187 80,544 1,432,863 5.6 5.5
202009 2,939 13,778 25,449 22,112 8,272 5,108 74,719 1,463,812 5.1 5.1
202010 2,907 13,887 26,394 23,906 8,889 5,696 78,772 1,488,786 5.3 5.3
202011 2,838 14,127 27,729 29,660 11,328 6,695 89,539 1,422,513 6.3 5.7
202012 2,800 10,742 17,486 30,804 12,471 6,984 78,487 1,066,560 7.4 6.4
202013 2,728 5,104 8,294 22,396 10,824 6,457 53,075 851,835 6.2 4.9
202014 2,689 2,359 4,852 14,964 8,695 5,380 36,250 750,256 4.8 3.8
202015 2,688 1,461 3,404 9,991 6,039 4,014 24,909 717,447 3.5 2.8
202016 2,667 1,043 2,652 7,433 4,181 2,925 18,234 708,322 2.6 2.1
202017 2,651 896 2,298 6,340 3,288 2,293 15,115 748,700 2.0 1.7
202018 2,621 850 2,100 5,292 2,670 1,894 12,806 789,173 1.6 1.4
202019 2,608 710 1,886 4,595 2,241 1,620 11,052 815,616 1.4 1.2
202020 2,597 783 1,969 4,126 2,172 1,446 10,496 844,295 1.2 1.1
202021 2,926 892 2,213 4,455 2,201 1,616 11,377 1,052,433 1.1 1.0
202022 2,907 798 1,886 3,564 1,871 1,445 9,564 1,073,175 .9 .9
202023 2,883 795 1,965 3,432 1,697 1,403 9,292 1,124,642 .8 .8
202024 2,857 876 2,133 3,437 1,717 1,372 9,535 1,163,517 .8 .9
202025 2,888 998 2,670 4,697 1,981 1,460 11,806 1,236,138 1.0 .9
202026 2,845 1,205 3,472 6,222 2,634 1,894 15,427 1,277,117 1.2 1.2
202027 2,833 1,381 3,941 7,005 3,210 2,219 17,756 1,276,861 1.4 1.3
202028 2,852 1,525 4,053 7,972 3,748 2,621 19,919 1,346,356 1.5 1.4
202029 2,815 1,629 4,055 7,494 3,533 2,413 19,124 1,323,973 1.4 1.4
202030 2,860 1,606 3,520 6,075 3,063 2,127 16,391 1,339,256 1.2 1.2
202031 2,884 1,586 3,484 5,663 2,560 2,094 15,387 1,329,648 1.2 1.2
202032 2,821 1,514 3,201 4,911 2,320 1,884 13,830 1,296,222 1.1 1.1
202033 2,568 1,469 2,892 4,212 2,009 1,625 12,207 1,198,972 1.0 1.0
Totals 1,974,096 58,302,909

Download Raw Data excel icon[6 KB]