VacTrAK is a web-based immunization information system (IIS) that is available from the Alaska Division of Public Health. It is a confidential, population-based, computerized system that maintains immunization information for Alaskans of all ages. VacTrAK is used to manage vaccine inventory and state supplied vaccine orders. VacTrAK helps public health agencies and health care providers to make informed decisions to improve the health of individuals and the entire community.