This electronic book from the National Academies Press (NAP) presents recommendations to the Centers for Disease Control (CDC) from the Committee on Smallpox Vaccination Program Implementation. The committee -- members of the Board on Health Promotion and Disease Prevention, Institute of Medicine -- focuses on two main issues: Considerations for next steps in the pre-event vaccination program, and the smallpox components of the Continuation Guidance for the Cooperative Agreement on Public Health Preparedness and Response for Bioterrorism. The Web site includes an excellent search feature, which allows users to search for terms in each chapter, the entire book, or even the entire collection of online NAP publications.