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 Visits for ILI by Age Group Reported by A Subset of ILINet Providers

Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers
Updated May 22, 2020
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).

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet):
Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers
September 29, 2019 – May 16, 2020
Data as of May 21, 2020
National
Week 0-4 years 5-24 years 25-49 years 50-64 years 65+ years
Total Visits % ILI Total Visits % ILI Total Visits % ILI Total Visits % ILI Total Visits % ILI
201940 56,425 6 172,613 2.4 249,835 1.2 135,200 0.7 150,920 0.5
201941 58,796 6.2 171,544 2.4 247,783 1.3 136,850 0.8 154,875 0.6
201942 59,998 6.8 166,934 2.7 242,650 1.4 135,354 0.9 154,625 0.6
201943 61,136 7.1 176,231 2.9 249,931 1.5 139,369 0.9 158,148 0.6
201944 63,547 7.4 171,729 3.1 245,723 1.5 133,493 0.9 151,858 0.6
201945 66,254 8.4 174,035 3.7 243,311 1.7 133,090 1 151,920 0.6
201946 67,301 9.3 170,191 4.2 240,821 2 131,489 1.2 148,155 0.7
201947 73,344 9.7 177,139 5 253,460 2.2 138,845 1.3 154,044 0.8
201948 74,382 11.1 152,778 5.3 231,731 2.4 127,018 1.4 148,199 0.9
201949 73,293 10.6 175,105 4.9 255,541 2.8 136,885 1.6 155,906 1
201950 76,087 10.8 183,535 6.1 254,931 3 137,872 1.7 155,624 1
201951 81,387 12.4 183,296 8.3 251,896 3.7 135,149 1.9 155,485 1.2
201952 90,324 15.9 170,254 11.5 258,698 5.9 140,840 3.2 165,273 2
202001 86,651 14.7 162,694 8.4 279,484 5.9 148,891 3.5 169,551 2.4
202002 72,255 12.3 172,811 7 272,768 5.1 146,861 3.1 164,556 1.9
202003 73,290 12.8 183,184 8.1 265,625 4.8 143,089 2.9 159,574 1.7
202004 75,415 13.8 185,850 9.4 265,289 5.3 141,861 3.2 157,292 1.7
202005 78,663 14.6 208,241 10.5 277,043 6.3 144,594 3.9 159,862 2
202006 78,330 15 207,802 11.2 275,064 6.8 146,129 4.1 158,963 2.1
202007 75,357 13.5 196,432 9.7 273,529 6.1 147,856 3.8 162,299 2
202008 68,083 13.1 174,085 8.6 250,155 5.7 136,284 3.8 150,863 2.1
202009 67,797 11.8 179,610 7.4 260,848 5.4 141,819 3.6 157,641 2
202010 69,083 11.7 188,285 7.4 270,129 5.5 146,865 3.7 162,075 2.2
202011 66,469 12.4 185,585 8.4 274,943 6.8 144,200 4.9 150,575 2.7
202012 45,640 13.9 118,217 8.6 230,370 7.7 116,231 6.2 109,799 3.7
202013 29,287 10.3 83,362 5.7 194,311 6.4 99,562 5.8 94,747 3.8
202014 21,419 6.2 70,390 4 169,576 5 90,498 5.2 87,391 3.3
202015 19,526 4.2 66,983 2.8 157,092 3.7 88,250 3.8 88,938 2.5
202016 19,105 3 65,399 2.2 150,661 2.9 85,073 2.8 89,731 1.8
202017 20,238 2.4 71,134 1.8 161,131 2.3 91,708 2.1 97,591 1.4
202018 21,211 2.1 77,042 1.6 167,793 1.9 93,880 1.6 101,695 1.1
202019 22,592 1.7 81,999 1.3 175,246 1.5 99,917 1.3 107,395 0.9
202020 23,848 1.8 86,178 1.3 178,929 1.3 100,595 1.2 110,526 0.7
Totals 1,936,533 5,010,667 7,776,297 4,215,617 4,646,096