Epi Info is a series of freely distributable programs for use by public health professionals in conducting outbreak investigations, managing databases for public health surveillance and other tasks, and general database and statistics applications.

With Epi Info and a personal computer, physicians, epidemiologists, and other public health and medical workers can rapidly develop a questionnaire or form, customize the data entry process, and enter and analyze data.

Epi Info contains a set of tools and utilities which can be installed individually or collectively.

Note: You do not have to register with Epi Info to use Epi Info, but registration allows the developer to contact you with training opportunities, new versions, etc.