is anthrax a chemical or biological agent
Bacillus anthracis. click to view larger. Anthrax is the preferred biological warfare agent. It is highly lethal. â¢ 100 million lethal doses per gram of anthrax material (100,000 times deadlier than the deadliest chemical warfare agent). â¢ Silent, invisible killer. â¢ Inhalational anthrax is virtually always fatal.