Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
UPDATEGiven 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.
UPDATEThe 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.
For Non-U.S. Settings
Updated Dec. 20, 2021
For Healthcare Workers Outside the U.S.
COVID-19 Emergency Response
- Leveraging influenza-like Illness (LIL), Severe Respiratory Infection (SARI) and Acute Febrile Illness (AFI) Systems, Laboratory Testing, and WHO Global Influenza Surveillance and Response System Reporting (GISRS) pdf icon[2 MB, 40 pages]
- National Surveillance Strategies for COVID-19 Human Infection pdf icon[460 KB, 33 pages]