Bioterrorism has been a growing concern in recent times, however the threat of biological warfare has been a constant concern as early as the 6th century B.C.E. The Ancient Assyrians were known to have poisoned the water supplies of their enemies causing widespread disease and panic. Much later, during the Middle Ages, when The Plague was ravaging Europe, armies hurled dead, diseased bodies at their enemies. The mere threat of coming in contact with a Plague-ridden body, often provoked immediate surrender. Even as recent as the French and Indian War in the 18th century, soldiers reportedly offered blankets laced with smallpox to Indians loyal to the French. An epidemic arose and eventually contributed to the decimation many tribes.

In 1925, the Geneva Convention banned all forms of biological warfare. Japan, refusing to approve the ban, began conducting experiments with biological agents. During World War II, Japanese bombs containing Y. pestis, the causative agent of the Plague, were dropped on at least three cities, causing the deaths of more than 150 people.

The threat of biological warfare continues today as it has for millennia. With advances in biotechnology comes not only new developments in germ warfare, but also improvements in the methods used to fight such attacks.

Category A

Yersinia pestis
Bacillus anthracis
Clostridium botulinum
Francisella tularensis

Smallpox
Ebola
Marburg

 

Category B
Brucella sp.
E. coli 0157:H7
Vibrio cholerae
Cryptosporidium parvum
Ricinus communis
 
Category C
Nimpah Virus
Hantavirus

 

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CDC Category Descriptions

Category A - HIGH Priority Category B Agents Category C Agents
  • Easily disseminated or transmitted
  • High mortality rates
  • Epidemic potential
  • Require special preparedness
  • Moderately easy to disseminate
  • Moderate morbidity and low mortality rates
  • Require enhanced surveillance
  • Emerging pathogens that could be mass-produced due to availability

  • Ease of production

  • Potentially major public health impact

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Revised: 05.08.2005
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