Researchers who conducted a decision and cost-effectiveness study published today in JAMA Network Open have concluded that the safe reopening of US college campuses amid the COVID-19 pandemic this fall relies on every-other-day screening of asymptomatic students and strict compliance with physical distancing and infection-control protocols.The study involved modeling a hypothetical cohort of 4,990 healthy college students and 10 with undetected, asymptomatic COVID-19 infections at the start of the semester.Assuming a reproduction number (Rt) of 2.5 (meaning that a primary case of COVID-19 is infecting, on average, 2.5 other people) and daily screening with a test with 70% sensitivity, a test with 98% specificity detected 162 student