Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
To maximize protection from the Delta variant and prevent possibly spreading it to others, get vaccinated as soon as you can and wear a mask indoors in public if you are in an area of substantial or high transmission.
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.
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 May 1, 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 – April 25, 2020
Data as of April 30, 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 3,267 2,148,042 22,868 1.1 19,511 0.9
201941 3,261 2,108,313 23,906 1.1 20,464 1.0
201942 3,266 2,102,680 26,285 1.3 22,536 1.1
201943 3,264 2,123,774 27,380 1.3 23,799 1.1
201944 3,308 2,088,684 29,112 1.4 25,486 1.2
201945 3,325 2,139,225 33,736 1.6 29,972 1.4
201946 3,337 2,123,658 36,077 1.7 32,452 1.5
201947 3,346 2,211,038 39,124 1.8 36,108 1.6
201948 3,347 2,099,151 42,782 2.0 39,651 1.9
201949 3,348 2,225,742 41,574 1.9 37,616 1.7
201950 3,355 2,241,980 43,911 2.0 42,541 1.9
201951 3,358 2,227,049 49,593 2.2 50,983 2.3
201952 3,362 2,333,761 64,290 2.8 68,690 2.9
202001 3,370 2,409,619 58,710 2.4 57,635 2.4
202002 3,371 2,293,160 43,360 1.9 42,608 1.9
202003 3,379 2,263,751 42,345 1.9 44,643 2.0
202004 3,395 2,261,410 45,996 2.0 49,609 2.2
202005 3,406 2,353,936 53,991 2.3 59,734 2.5
202006 3,409 2,342,858 53,145 2.3 59,025 2.5
202007 3,416 2,276,676 47,354 2.1 50,880 2.2
202008 3,414 2,258,834 43,938 1.9 45,917 2.0
202009 3,426 2,221,981 40,701 1.8 41,693 1.9
202010 3,435 2,252,833 49,334 2.2 49,809 2.2
202011 3,433 2,238,319 76,551 3.4 71,353 3.2
202012 3,430 1,796,341 107,183 6.0 84,338 4.7
202013 3,437 1,442,781 98,790 6.8 62,245 4.3
202014 3,432 1,255,329 85,952 6.8 43,722 3.5
202015 3,417 1,187,814 71,056 6.0 29,922 2.5
202016 3,419 1,168,372 56,896 4.9 21,226 1.8
202017 3,402 1,234,383 48,098 3.9 17,296 1.4
Total 61,431,494 1,504,038 1,281,464

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