… Flu Immunization For the safety of our students, faculty, staff, and clients of our on-campus centers, … vaccinated by a Mass General Brigham provider other than the OHS, you will need to visit your WorkWell Flu Card to upload proof of vaccination or to consent for … of Mass General Brigham, including a retail pharmacy such as CVS, you will need to visit your WorkWell Flu Card to upload proof of vaccination. Proof of vaccination …