Following the post 9/11 distribution of anthrax spores through the U.S. mail, and the resulting deaths of five individuals - primarily due to initial misdiagnosis - there has been a renewed interest in anthrax among clinicians and intelligence agencies, particularly as a biological warfare agent. This monograph brings forth essential knowledge about anthrax. Included in this volume, are, the early history, non-natural outbreaks of anthrax, characteristics of the causative organism Bacillus anthracis and its relationship to other members of the B. cereus family. Also included are reports on ext