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 Apr. 24, 2020

Week No. of Labs Spec Tested # Pos % Pos
U.S. Clinical Laboratories Reporting SARS-CoV-2 Test Results to CDC
March 8, 2020 – April 18, 2020
Data as of April 23, 2020
202011 27 2,813 186 6.6
202012 43 18,914 1,190 6.3
202013 54 41,998 3,486 8.3
202014 62 52,267 5,513 10.6
202015 79 49,452 5,595 11.3
202016 57 47,983 4,585 9.6
Total 213,427 20,555 9.6

Download Raw Data excel icon[642 B]