It started with the cohort system and spread to the Thursday night pub, Wharton Follies, TalkTalk, study groups, group projects, grad student dorms, off-campus house parties and the weekend the entire class of 1990 spent at the Jersey Shore.
When hand sanitizers were placed in dorms at the University of Colorado, a study on infection control found that overall illness rate dropped by 20 percent and missed school days by 43 percent.