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

Emergency Department Visits Percentage of Visits for COVID-19-Like Illness (CLI) or Influenza-like Illness (ILI)

Emergency Department Visits Percentage of Visits for COVID-19-Like Illness (CLI) or Influenza-like Illness (ILI)
Updated Sept. 18, 2020

National Syndromic Surveillance Program (NSSP): Emergency Department Visits
Percentage of Visits for COVID-19-Like Illness (CLI) or Influenza-like Illness (ILI)
September 29, 2019 – September 12, 2020
Data as of September 17, 2020
National
Week Number of Facilities Reporting Total Number of ED Visits CLI Visits ILI Visits
Number Percent of Total Visits Number Percent of Total Visits
201940 3,377 2,151,072 22,621 1.1 19,689 0.9
201941 3,375 2,104,737 23,495 1.1 20,505 1
201942 3,377 2,095,214 25,761 1.2 22,528 1.1
201943 3,374 2,117,874 26,890 1.3 23,827 1.1
201944 3,392 2,074,908 28,642 1.4 25,469 1.2
201945 3,431 2,136,199 33,211 1.6 29,999 1.4
201946 3,437 2,132,508 35,736 1.7 32,664 1.5
201947 3,459 2,220,615 38,773 1.7 36,297 1.6
201948 3,459 2,109,197 42,542 2 39,995 1.9
201949 3,468 2,236,959 41,252 1.8 37,938 1.7
201950 3,467 2,251,072 43,520 1.9 42,758 1.9
201951 3,470 2,234,947 49,164 2.2 51,207 2.3
201952 3,468 2,343,775 63,877 2.7 69,047 2.9
202001 3,505 2,427,327 58,526 2.4 58,228 2.4
202002 3,511 2,315,274 43,209 1.9 43,205 1.9
202003 3,507 2,285,477 42,218 1.8 45,260 2
202004 3,531 2,283,149 45,935 2 50,280 2.2
202005 3,541 2,377,247 53,884 2.3 60,484 2.5
202006 3,548 2,365,541 53,108 2.2 59,838 2.5
202007 3,565 2,301,261 47,320 2.1 51,614 2.2
202008 3,564 2,286,856 43,877 1.9 46,639 2
202009 3,571 2,249,074 40,673 1.8 42,440 1.9
202010 3,583 2,279,823 49,331 2.2 50,654 2.2
202011 3,592 2,266,021 76,366 3.4 72,464 3.2
202012 3,586 1,820,512 106,832 5.9 85,609 4.7
202013 3,604 1,463,425 98,585 6.7 63,142 4.3
202014 3,605 1,273,818 86,256 6.8 44,374 3.5
202015 3,597 1,210,848 72,242 6 30,566 2.5
202016 3,598 1,189,392 58,638 4.9 21,715 1.8
202017 3,587 1,259,719 52,981 4.2 17,804 1.4
202018 3,594 1,316,092 48,765 3.7 15,197 1.2
202019 3,590 1,378,420 42,682 3.1 12,817 0.9
202020 3,593 1,428,272 39,063 2.7 11,990 0.8
202021 3,615 1,530,795 36,248 2.4 11,512 0.8
202022 3,637 1,624,028 32,656 2 10,205 0.6
202023 3,642 1,673,240 30,389 1.8 9,972 0.6
202024 3,645 1,748,370 32,618 1.9 10,717 0.6
202025 3,649 1,792,985 41,792 2.3 13,635 0.8
202026 3,659 1,887,267 57,973 3.1 17,674 0.9
202027 3,661 1,892,582 72,644 3.8 19,968 1.1
202028 3,657 1,988,293 82,880 4.2 21,481 1.1
202029 3,660 1,946,693 79,526 4.1 20,021 1
202030 3,658 1,909,214 70,490 3.7 16,903 0.9
202031 3,657 1,896,612 63,185 3.3 15,598 0.8
202032 3,667 1,878,754 56,293 3 14,043 0.7
202033 3,665 1,910,582 49,450 2.6 13,330 0.7
202034 3,673 1,895,550 43,895 2.3 12,935 0.7
202035 3,674 1,898,831 40,420 2.1 12,690 0.7
202036 3,663 1,891,488 37,025 2 12,305 0.7
202037 3,658 1,884,406 33,419 1.8 12,798 0.7
Total 97,236,315 2,496,878 1,582,030