Anthrax spores have several characteristics suitable for a biologic weapon, such as low visibility, high potency, accessibility, and relatively easy delivery, and could be used not only in war but during terrorist activities. A millionth of a gram of anthrax spores constitutes a lethal inhalation dose; a kilogram, depending on meteorologic conditions and means of delivery, has the potential to kill hundreds of thousands of people in a metropolitan area. Concerns have been raised by recent reports from Russia that scientists were able to insert all the B. anthracis genes determining the pathogenicity of anthrax into other bacilli, such as Bacillus cereus, against which the present available vaccine is ineffective. In addition, the vaccine may not protect against some rare B. anthracis strains. It is also possible to produce B. anthracis strains that are resistant to antibiotics.
Info: Bacillus anthracis Spores Used as a Biologic Warfare Agent