The Centers for Disease Control and Prevention’s recommendations for coronavirus testing at colleges have been somewhat inconsistent. It initially only advised them to screen for the virus if individuals were symptomatic or if they may have been exposed to the virus, but in September it revised its stance, suggesting that testing students upon reentry, and regularly after their return, could be useful to prevent transmission.
This advice tracked with research that suggested frequent testing was key to prevention. One study found students would need to be tested every two days, as well as abide by other mitigation efforts, to halt the virus’ spread.
