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.
COVIDView: A Weekly Surveillance Summary of U.S. COVID-19 Activity

U.S. Clinical Laboratories Reporting SARS-CoV-2 Test Results to CDC

U.S. Clinical Laboratories Reporting SARS-CoV-2 Test Results to CDC
Updated May 1, 2020, 02:00 PM

Week No. of Labs Spec Tested # Pos % Pos
U.S. Clinical Laboratories Reporting SARS-CoV-2 Test Results to CDC
March 1, 2020 – April 25, 2020
Data as of April 30, 2020
202011 27 2,815 186 6.6
202012 43 18,969 1,191 6.3
202013 54 42,053 3,491 8.3
202014 62 52,295 5,514 10.5
202015 82 53,431 6,936 13
202016 88 61,375 6,714 10.9
202017 60 61,818 6,784 11
Total 292,756 30,816 10.5

Download Raw Data excel icon[642 KB]