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.
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.

COVID-19 Electronic Laboratory Reporting Implementation by State

COVID-19 Electronic Laboratory Reporting Implementation by State
Updated Apr. 20, 2021
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As of April 20, 2021

Footnote:

CDC has been rapidly onboarding state and jurisdictional health departments to a more detailed form of COVID-19 electronic laboratory reporting (CELR). As of Wednesday, April 21st, 56 jurisdictions have converted to electronic laboratory reporting, representing 100% of the total laboratory testing volume in the country.​