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

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
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This graph displays the number of respiratory specimens tested and the percent positive for SARS-CoV-2 reported to CDC by U.S. Clinical Laboratories through the National Respiratory and Enteric Virus Surveillance System.
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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[642 KB]