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Home >> Microbiology >> Microbial Diseases and Their Control >> Bioterrorism

Bioterrorism
Bioterrorism is the intensional or threatened use of viruses, bacteria, fungi or toxins obtained from living organisms to cause death or disease in humans, animals, and plants. Bioterrorism is receiving public attension because biological weapons and weapons-making technologies are know or suspected to be in the hand s of some rogue governments and extremist groups. Currently terrorist incidents and hoaxes involving toxic or infections agents have been on the rise. Somewhere, sometime in the future terrorists may well threaten to use or attempt to use biological weapon.

Planned bioterrorist attack have already place. Cultists inoculated a salad bar with Salmonella typhimurium at 10 local restaurants in Dalles Oregon (USA) during 1984. This resulted in 750 cases of food-borne salmonellosis that usually has only upto 10 cases per year. A radical political groups used a chemical weapon (saran nerve gas) in Tokyo subway in 1995, this group also possessed cultures of Bacillus anthracis, bacteriological media, drone airplanes and spray tanks

Bioterrorism Agents
Virtually all pathogenic bacteria and viruses are potentially useful for bioterrorism, many of them can be grown and disseminated relatively simply. The most common agent for bioterrorism is considered to be the Bacillus anthracis, the causal agent of anthrax, which produces endospores and when the latter aerosolized, can be a very effective means of distributing the pathogen. Inhalation of the endospores or the live bacteria cause pulmonary infections enjoying nearly 100% mortality rate if untreated.

Other bacterial agents of bioterrorism include Yersinia pestis (plague), Brucella abortus (fever and bacterimia) and Salmonella (food-borne and water-borne diseases). Bacterial toxins such as Botulinum toxin produced by Clostridium Botulinum are also possible bioweapons. Large quantity of preformed toxin if delivered through drinking water, can have devastating consequences. The lethal dose of Botulinum toxin for a human is 2 Bioterrorismm or even less.

Preventions
Governments are being in favour of large scale production and distribution of vaccines and the development of strategic and tactical plants to prevent and contain the effects of bioweapons. In addition, efforts to update the international agreements of the 1972 Biological and Toxic Weapons Convention have already begun.

 

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