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

Commercial Labs

Commercial Labs
Updated Apr. 17, 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.

U.S. Commercial Laboratories Reporting to CDC
March 29, 2020 – April 11, 2020
Data as of April 16, 2020
Week No. of Labs Total (includes age unknown) 0-4 years 5-17 years 18-49 years 50-64 years 65+ years
Spec Tested # Pos % Pos Spec Test-ed # Pos % Pos Spec Test-ed # Pos % Pos Spec Test-ed # Pos % Pos Spec Test-ed # Pos % Pos Spec Tested # Pos % Pos
202014 6 574,828 118,643 20.6 11,304 559 4.9 15,984 1,542 9.6 311,525 58,305 18.7 145,301 35,561 24.5 89,970 22,471 25
202015 6 563,423 127,578 22.6 8,500 618 7.3 14,968 2,093 14 301,614 63,083 20.9 149,615 38,467 25.7 88,004 23,136 26.3
Total 1,138,251 246,221 21.6 19,804 1,177 5.9 30,952 3,635 11.7 613,139 121,388 19.8 294,916 74,028 25.1 177,974 45,607 25.6