Read again today about colleges and universities being concerned about students (and faculty?) showing up with fake vaccine cards. They should not worry: Besides being a possible crime of fraud, about the only increased risk is to the fakers themselves. Vaccinated people might catch a covid-cold from the unvaxxed, but they could also catch one from vaccinated people. It's the unvaxxed who have much more to lose. At an in-person school and dorm, they are a lot more likely to catch it, and it could be much more serious. If they do go home sick, they might kill their parents or grandparents.