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

Percentage of Outpatient and Emergency Department Visits for ILI and CLI

Percentage of Outpatient and Emergency Department Visits for ILI and CLI
Updated Feb. 5, 2021

Percentage of Outpatient and Emergency Department Visits for COVID-19-Like Illness (CLI) or Influenza-like Illness (ILI)
ILINet and NSSP
September 29, 2019 – January 30, 2021
Data as of February 4, 2021
Week NSSP ILINet
Number of Facilities Reporting Total Number of ED Visits % of Total Visits for CLI % of Total Visits for ILI Number of Sites Reporting Total Patient Visits % of Total Visits for ILI (unweighted) % of Total Visits for ILI (weighted) Baseline
201940 3,401 2,154,618 1.1 1.3 2,912 1,458,307 1.5 1.5 2.4
201941 3,395 2,107,775 1.1 1.5 2,942 1,436,748 1.6 1.6 2.4
201942 3,396 2,098,224 1.2 1.6 2,966 1,430,800 1.7 1.7 2.4
201943 3,397 2,120,880 1.3 1.7 2,997 1,473,831 1.9 1.8 2.4
201944 3,414 2,077,918 1.4 1.9 3,005 1,435,369 2 2 2.4
201945 3,453 2,139,381 1.6 2.2 3,022 1,463,253 2.4 2.4 2.4
201946 3,467 2,135,531 1.7 2.4 2,991 1,426,928 2.6 2.6 2.4
201947 3,477 2,223,853 1.7 2.6 2,987 1,484,969 3 2.9 2.4
201948 3,476 2,112,214 2 3 2,993 1,275,199 3.5 3.4 2.4
201949 3,494 2,240,244 1.8 3 2,995 1,476,208 3.3 3.3 2.4
201950 3,493 2,254,354 1.9 3.4 2,958 1,458,774 3.9 3.9 2.4
201951 3,492 2,238,209 2.2 4.2 2,926 1,424,436 5 5.1 2.4
201952 3,492 2,346,996 2.7 5.8 2,917 1,338,669 7.2 7.1 2.4
202001 3,544 2,435,276 2.4 5.4 2,970 1,426,691 6.2 5.9 2.4
202002 3,548 2,325,954 1.9 4.5 3,002 1,492,251 5.1 4.9 2.4
202003 3,546 2,295,877 1.8 4.5 2,995 1,489,132 5.4 5.3 2.4
202004 3,572 2,293,474 2 5 2,997 1,496,826 6 6.1 2.4
202005 3,572 2,388,064 2.3 5.8 2,995 1,575,900 6.9 6.7 2.4
202006 3,586 2,377,122 2.2 5.9 3,005 1,571,657 7.1 6.8 2.4
202007 3,599 2,312,178 2.1 5.2 2,969 1,533,883 6.2 6.1 2.4
202008 3,594 2,297,848 1.9 4.8 2,984 1,433,517 5.6 5.5 2.4
202009 3,610 2,259,444 1.8 4.3 2,947 1,466,346 5.1 5.1 2.4
202010 3,622 2,291,241 2.2 4.7 2,913 1,489,410 5.3 5.3 2.4
202011 3,626 2,277,988 3.4 5.9 2,847 1,425,172 6.3 5.7 2.4
202012 3,623 1,829,925 5.9 7 2,810 1,068,755 7.4 6.4 2.4
202013 3,642 1,471,480 6.7 5.7 2,738 853,431 6.2 4.9 2.4
202014 3,640 1,281,325 6.8 4.4 2,696 750,546 4.8 3.8 2.4
202015 3,629 1,217,904 6 3.2 2,698 718,953 3.5 2.8 2.4
202016 3,630 1,196,326 4.9 2.3 2,679 709,970 2.6 2.1 2.4
202017 3,618 1,266,900 4.2 1.8 2,663 750,576 2 1.7 2.4
202018 3,628 1,323,718 3.7 1.4 2,635 790,883 1.6 1.4 2.4
202019 3,627 1,386,243 3.1 1.2 2,624 817,791 1.4 1.2 2.4
202020 3,630 1,436,536 2.7 1 2,613 846,493 1.2 1.1 2.4
202021 3,656 1,538,979 2.4 0.9 2,954 1,057,716 1.1 1 2.4
202022 3,677 1,632,575 2 0.8 2,936 1,077,400 0.9 0.9 2.4
202023 3,679 1,681,952 1.8 0.7 2,913 1,129,210 0.8 0.8 2.4
202024 3,679 1,757,501 1.9 0.7 2,886 1,168,231 0.8 0.9 2.4
202025 3,687 1,801,777 2.3 0.9 2,923 1,241,545 1 0.9 2.4
202026 3,697 1,894,523 3.1 1.2 2,880 1,281,547 1.2 1.2 2.4
202027 3,699 1,897,782 3.8 1.3 2,873 1,282,831 1.4 1.3 2.4
202028 3,696 1,993,734 4.2 1.3 2,898 1,354,025 1.5 1.4 2.4
202029 3,700 1,951,864 4.1 1.3 2,870 1,332,358 1.4 1.3 2.4
202030 3,706 1,914,918 3.7 1.1 2,932 1,350,378 1.2 1.2 2.4
202031 3,702 1,905,592 3.3 1 2,968 1,341,511 1.2 1.2 2.4
202032 3,723 1,889,846 3 0.9 2,924 1,327,898 1.1 1.1 2.4
202033 3,722 1,922,247 2.6 0.8 2,944 1,331,021 1 1 2.4
202034 3,729 1,907,060 2.3 0.8 2,897 1,334,021 1 1 2.4
202035 3,733 1,911,604 2.2 0.8 2,925 1,340,683 1 1 2.4
202036 3,729 1,905,179 2 0.8 2,869 1,317,298 0.9 0.9 2.4
202037 3,730 1,919,106 2 0.8 2,849 1,308,903 1 1 2.4
202038 3,748 1,920,278 2 0.8 2,827 1,325,442 1 1 2.4
202039 3,756 1,928,975 2.1 0.9 2,784 1,346,001 1 1 2.4
202040 3,756 1,930,860 2.3 0.9 3,305 1,535,945 1.1 1.1 2.6
202041 3,758 1,992,820 2.7 1.1 3,334 1,610,538 1.2 1.2 2.6
202042 3,756 1,964,388 2.9 1 3,318 1,576,883 1.1 1.1 2.6
202043 3,761 1,953,462 3.3 1.1 3,336 1,573,580 1.2 1.2 2.6
202044 3,752 1,889,205 3.7 1.1 3,432 1,558,591 1.2 1.3 2.6
202045 3,758 1,963,302 4.6 1.2 3,432 1,595,412 1.3 1.4 2.6
202046 3,756 2,039,790 5.5 1.3 3,400 1,635,093 1.4 1.5 2.6
202047 3,762 1,967,640 6.3 1.4 3,338 1,584,214 1.4 1.6 2.6
202048 3,764 1,873,740 6.8 1.4 3,335 1,418,290 1.5 1.6 2.6
202049 3,766 1,933,750 6.9 1.3 3,338 1,530,701 1.4 1.6 2.6
202050 3,761 1,917,909 7.3 1.3 3,348 1,545,283 1.4 1.5 2.6
202051 3,771 1,867,080 7.4 1.3 3,283 1,483,558 1.4 1.5 2.6
202052 3,772 1,762,431 7.8 1.3 3,281 1,352,891 1.5 1.5 2.6
202053 3,749 1,895,988 8.1 1.4 3,250 1,445,158 1.5 1.6 2.6
202101 3,546 1,831,448 8.3 1.3 3,264 1,561,742 1.4 1.5 2.6
202102 3,569 1,764,104 7.5 1.1 3,229 1,485,371 1.3 1.3 2.6
202103 3,568 1,780,638 6.3 1.1 3,184 1,466,802 1.2 1.3 2.6
202104 3,571 1,754,009 5.1 1 3,062 1,410,370 1.1 1.1 2.6
Total 135,859,838 93,910,115

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