Guidance for Using Masks in MBL Work Areas

Updated 11/29/2022

Masking is optional in all MBL spaces, including classrooms and public events and tours. All individuals should be courteous of others and respect their masking choices. Individuals who have recently tested positive or have been exposed to COVID are required to wear a mask according to CDC exposure protocols.

Indoor mask policies will continue to be assessed and modified to reflect the local community transmission level and the changing campus environment. Any changes to the masking policy considers the constant flux of U.S. and international investigators, faculty, and students onto our campus.

If you have any questions or concerns, please contact Eric Jensen (EHS Manager) at 508-289-7424 or by email at

MBL-branded masks can be purchased through the Gift Shop. Disposable masks are available for purchase in the MBL Stockroom.