Animal Care and UseAward ManagementConflicts of InterestContracts and SubawardsControlled SubstancesEnvironmental Health and SafetyExport ControlHIPAAHuman Stem Cell ResearchHuman Subjects Research

Masks Required Indoors

Published July 26, 2021

Dear Research Community,

Per the University’s announcement today, effective immediately, both Danforth and Medical campuses are reinstating indoor mask requirements in accordance with city and county mandates. Masks are again required at all indoor meetings and gatherings (regardless of size) and in public and shared spaces. Masking is required when more than one person is in a lab or a shared office.

The revised mask mandate applies to everyone, including those who are vaccinated. This change in masking requirements supersedes all previously posted guidance related to masking.

Masks are not required inside a private office or room with the door closed, or when six-foot physical distancing can be maintained while eating or drinking. Masks are encouraged but not required for outdoor activities.

Please do not come to campus if you are ill; mild symptoms similar to those of a common cold may actually be COVID-19. Call the COVID Call Center at 314-362-5056 to report symptoms or exposure and to arrange for a free test. You can learn more about delta and other COVID-19 variants on the CDC website.

As a reminder, Washington University students, faculty, staff and trainees on both campuses will be required to receive the COVID-19 vaccination. Proof of full vaccination must be provided by August 30, 2021, to ensure compliance with this policy. Vaccines are available free of charge, and appointments can be made through the university by emailing

The university will continue to monitor the situation closely and adjust policies as needed to protect the health and safety of all members of our community. Below are links to further guidance and COVID-19 information:

Best regards,
Jennifer Lodge, PhD
Vice Chancellor for Research