UNC did this with no plan. They didn't test incoming students and they didn't attempt to decrease student density. Both Wake and Duke are requiring all students to test prior to arriving on campus and they both have taken major steps to reduce density - Wake has 65% of the rooms now as singles, and Duke has spaced out to the Washington Duke hotel and other buildings. These plans still may not work, but they are much better than no plan at all.
Fuck duke.