Updated April 10, 2020

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.
Week No. of Labs Spec Tested # Pos % Pos
U.S. Clinical Laboratories Reporting SARS-CoV-2 Test Results to CDC
March 1, 2020 – April 4, 2020
Data as of April 9, 2020
202011 26 2,785 182 6.5
202012 41 18,494 1,149 6.2
202013 50 37,390 2,966 7.9
202014 37 36,468 2,798 7.7
Total 95,137 7,095 7.5



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