Alex Harrington writes: “As a medical school library, we already have students beginning a new academic year. Between nurse, PA, and MD programs, residents, and the nonstop functioning of a hospital we support, we knew we would be among the early returners—the guinea pigs, if you will. Some upsides: The majority of our user base is already accustomed to wearing surgical masks for long periods of time, so I imagine we’re correcting mask protocol less often than we would have to elsewhere.”