Microbiology in the News

Biological Weapons: How big is the threat?

The Director General of the World Health Organization (WHO) called for countries to "strengthen their capacity to respond to the consequences of the use of biological and chemical agents as weapons" (click here for further details). Dr Brundtland went on to tell health ministers at a meeting in Washington on 24 September 2001 "we must prepare for the possibility that people are deliberately harmed with biological or chemical agents". WHO has recently upgraded procedures to help countries respond to suspected incidents of deliberate infection through the 'Global Outbreak Alert and Response Network', which monitors reports and rumours of disease events worldwide.

Possible biological agents

Although it is possible for any infectious agent to be incorporated into a weapon, in reality, most experts agree that anthrax, smallpox, botulism and plague are the most likely candidates.

Organisms considered to have potential for biological weapons:

Transmissible Non-transmissible
  • Plague (pneumonic)
  • Plague (bubonic)
  • Cholera
  • Ebola
  • Lassa
  • Marburg
  • Smallpox
  • Influenza
  • Paratyphoid fever
  • Dysentery
  • Typhoid fever
  • Anthrax (pulmonary)
  • Glanders
  • Melioidosis
  • Scrub typhus
  • Epidemic typhus
  • Eastern equine encephalitis
  • Japanese B encephalitis
  • Russian spring-summer encephalitis
  • St Louis encephalitis
  • Western equine encephalitis
  • Yellow fever
  • Inhaled toxins
  • Brucellosis
  • Tularaemia
  • African tick-borne fever
  • Rocky Mountain spotted fever
  • Q fever
  • Chikungunya
  • Dengue
  • Rift valley fever
  • Venezuelan equine encephalitis
  • West nile fever
  • Coccidiodiomycosis
  • Nocardiosis
  • Histoplasmosis
  • Ingestion of some toxins

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