Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
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.
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.
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

Cleaning, Disinfecting, and Ventilation

Cleaning, Disinfecting, and Ventilation

Plan, Prepare, and Respond

Updated Apr. 19, 2021

The Clean Air in Buildings Challengeexternal icon helps building owners and operators improve indoor air quality and protect public health. Create your clean indoor air action plan today.

cleaning a desktop surface

Cleaning and Disinfecting


  • Ventilation in Buildings
    Protective practices can reduce risk of exposure to the virus and reduce the spread of disease
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