Details on each vaccine are available by clicking on the vaccine names and Info buttons. Both files are required in order for Shots to function. You should install the file included in the .zip archive in order to ensure that you're using correct version.
Shots is freeware for personal use.
It is not public domain software and may not be sold or used for commercial purposes without the express written permission of the author. 1.0 - Initial public release. No new features added. 2.0 - Updated to reflect the new 2001 recommendations. 2.1 - Minor changes to some of the vaccine information.