University of Michigan locks more students out of buildings for failing to complete COVID testing Second wave of students have Mcards deactivated Meredith Bruckner, Community News Producer, All About Ann Arbor Published: Tags: ANN ARBOR – The University of Michigan has deactivated Mcard access to non-residential buildings on campus for a second wave of students over their failure to comply with required COVID-19 testing. Earlier this term, the school laid out testing requirements for those living, working or visiting campus, which include weekly COVID-19 testing through the university’s Community Sampling and Tracking Program. On April 12, U-M’s Compliance and Accountability Team sent emails to 718 undergraduate, graduate and professional students who had not reported for testing in four or more weeks, or who have no record of testing but have recently used their Mcard on campus.