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According to the [[Centers for Disease Control and Prevention]], '''Anthrax''' is "an acute infectious disease caused by the spore-forming bacterium ''Bacillus anthracis.'' Anthrax most commonly occurs in hoofed mammals and can also infect humans."<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm</ref>

According to the [[Centers for Disease Control and Prevention]], '''Anthrax''' is "an acute infectious disease caused by the spore-forming bacterium ''Bacillus anthracis.'' Anthrax most commonly occurs in hoofed mammals and can also infect humans."<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm</ref>

Anthrax is important in the history of medicine. In 1875, the pioneering bacteriologist [[Robert Koch]] convincingly proved for the first time that a particular disease, anthrax, was caused by a specific microbe, ''Bacillus anthracis.'' Koch's proof involved four steps, which have become known as [[Koch's postulates]].

Anthrax is important in the history of medicine. In 1875, the pioneering bacteriologist [[Robert Koch]] convincingly proved for the first time that a particular disease, anthrax, was caused by a specific microbe, ''Bacillus anthracis.'' Koch's proof involved four steps, which have become known as Koch's postulates.

==Koch's postulates==

==Koch's postulates==

*The microbe must always be present in animals showing the disease, and never in healthy animals.  

*The microbe must always be present in animals showing the disease, and never in healthy animals.  

*It must be possible to isolate the microbe and grow it in pure culture.

*It must be possible to isolate the microbe and grow it in pure culture.