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

Number of Specimens Tested and Percent Positive for SARS-CoV-2

Number of Specimens Tested and Percent Positive for SARS-CoV-2
Updated Nov. 20, 2020
Number of Specimens Tested and Percent Positive for SARS- CoV-2: Combined Laboratories Reporting to CDC from Public Health Laboratories and a Subset of Commercial and Clinical Laboratories

Combined U.S. Laboratories Reporting to CDC: Public Health Laboratories and a Subset of Commercial and Clinical Laboratories
March 1, 2020 – November 14, 2020
Data as of November 19, 2020
Total (includes age unknown) 0-4 years 5-17 years 18-49 years 50-64 years 65+ years
Week Spec Tested % Pos Spec Tested % Pos Spec Tested % Pos Spec Tested % Pos Spec Tested % Pos Spec Tested % Pos
202010 8,307 11.8 228 4.4 586 7.2 3,181 10 1,976 12.6 2,158 15.5
202011 38,232 9.5 977 2.1 1,971 4.2 15,613 8.8 8,412 11.7 7,968 11.9
202012 87,350 9.2 1,576 2.2 2,330 3.7 31,866 8.3 16,155 11.3 16,338 12.8
202013 110,082 13.2 1,266 3.8 1,432 5.6 29,996 12.8 15,635 18.7 17,752 21.5
202014 659,965 21.8 9,129 6.5 15,396 13.6 318,197 20.6 156,993 26.2 104,205 27.1
202015 643,004 21.4 7,660 8.4 15,408 15.6 299,822 20.4 156,399 24.5 106,288 26.3
202016 651,044 18.5 7,378 9 17,710 14.9 288,433 18.7 154,902 20.3 113,961 21.5
202017 831,008 15.3 8,565 8.5 23,365 14.6 358,143 16.2 192,957 15.9 156,628 16.3
202018 997,570 12.5 10,912 8.7 29,846 14.3 421,730 13.7 228,352 12.3 191,900 12.3
202019 1,168,287 9.7 13,869 7.5 36,537 12.4 479,809 11.1 265,103 9.1 235,270 8.8
202020 1,431,573 7.6 16,930 7.5 46,259 10.9 578,025 8.9 323,744 6.8 300,214 6.3
202021 1,739,326 6.4 19,215 7.5 53,973 10.4 724,834 7.5 387,026 5.6 349,355 5.1
202022 1,732,933 5.7 17,342 7.3 51,192 10.7 721,436 6.8 383,280 4.9 344,866 4.3
202023 1,944,317 5.5 19,977 7.9 60,129 10.4 846,334 6.7 412,674 4.5 361,981 3.8
202024 2,143,392 6.1 23,891 8.5 73,766 10.9 974,588 7.7 437,933 4.9 361,679 3.7
202025 2,440,060 7.9 30,338 9.8 99,754 11.8 1,169,636 10.1 480,371 6.1 375,169 4.2
202026 2,892,673 9.4 38,338 10.5 136,605 12.5 1,437,996 11.5 555,222 7.6 403,523 5.2
202027 2,849,823 9.7 37,567 10 139,513 12.2 1,444,034 11.3 535,528 8.5 372,159 5.9
202028 3,145,718 9.8 43,139 10.3 156,420 12.8 1,588,060 11.2 604,176 8.9 419,229 6.8
202029 3,115,318 8.9 43,045 9.4 156,753 12.1 1,541,142 10 588,326 8.4 405,108 6.7
202030 2,804,038 8.4 38,799 9.2 136,095 11.6 1,360,050 9.2 528,575 8.2 367,057 6.8
202031 2,599,242 7.4 35,564 8.4 124,615 10.8 1,266,644 7.8 477,235 7.2 333,151 6.2
202032 2,502,532 6.7 34,230 7.8 118,165 9.9 1,213,265 6.9 458,895 6.5 323,233 5.8
202033 2,449,756 6 34,239 6.8 117,539 8.8 1,193,659 6 441,404 5.8 315,304 5.2
202034 2,436,426 5.4 33,855 6 117,789 7.7 1,158,053 5.6 425,278 5.1 296,843 4.8
202035 2,255,283 5.6 33,519 5.6 122,528 7.1 1,079,937 6 402,725 5 282,757 4.3
202036 2,291,321 5.3 33,582 5 124,678 6.2 1,107,211 5.7 403,242 4.5 283,948 4
202037 2,158,331 5 30,771 4.2 115,655 6.1 998,257 5.4 383,864 4.3 286,517 3.6
202038 2,498,617 5 37,496 4.1 150,148 6 1,131,896 5.2 437,416 4.3 325,342 3.8
202039 2,583,777 5.2 36,048 4.1 144,441 5.7 994,294 5.2 386,953 4.5 291,490 3.9
202040 2,583,228 5.3 40,611 4.1 164,345 5.9 1,162,333 5.2 456,468 4.8 339,554 4.2
202041 2,923,877 5.6 44,125 4.4 186,450 6.3 1,332,336 5.4 525,487 5.1 384,047 4.6
202042 2,853,157 6.5 42,685 5.4 184,281 7.3 1,304,352 6.3 510,726 6.1 373,493 5.3
202043 3,003,822 7.2 45,802 5.9 207,796 8 1,406,304 7.1 549,739 7 397,348 6.1
202044 3,149,640 8.5 47,555 6.7 223,492 9 1,467,170 8.2 567,980 8.2 399,126 7
202045 3,461,934 10.8 57,830 8.2 266,754 11.4 1,630,845 10.8 612,580 10.5 426,570 8.7
202046 3,435,511 11.9 57,025 8.6 255,924 12.4 1,476,587 11.5 572,679 11.5 405,915 9.8