The intervention dorms will be given a portable alcohol-based hand sanitizer and a large stationary pump alcohol-based hand sanitizer to use throughout the study period in addition to basic hand hygiene education materials and messages. In order to quantify the effect of the alcohol-based hand sanitizer use on influenza virus transmission, regular self reports of hand-sanitizer use will be collected and the products provided will be monitored for use (by weighing) and re-supplied as needed on a weekly basis during the influenza season. Control participants will also be required to provide information on type and name of product used and daily frequency of use, should they be using any.