Zusammenfassung der Ressource
Bioterrorism
- Top Biological Agents
- warning signs
- Unusual diseases not typically seen in the area
- Unusual numbers of cases of a disease
- Anthrax Disease
- Bacillus anthracis
- gram-positive, non-motile
spore-forming bacterium
- can withstand extreme heat, cold and drought for long periods
- Types
- Cutaneous anthrax
- skin contact
- 20% mortality rate
- Gastrointestinal anthrax
- eating infected meat
- vegetative state and not the spores
- 80-90% mortality rate
- Inhalational anthrax
- breathing spores
- ~90% mortality rate
- Death may follow in hours to days
- spores are transported into the
mediastinal lymph nodes
- toxins leading to sudden development of
fever, hemorrhage, respiratory distress and
shock
- Pathophysiology
- anthrax spores [8-10
thousand] into alveolar
space
- 1 to 5 micron size spores
ingested by macrophages
- mediastinal LN’s
- germination of spores to B
anthracis within 1-3 days
- toxins
- protective antigen, lethal
factor, edema factor
- Protective antigen +
Lethal factor= Lethal
toxin
- hemorrhagic
mediastinitis and
edema
- Why preferred?
- Inexpensive
- Natural occurring disease
- Smaller quantity needed
- Antibiotics are not effective against
spores or toxins
- treatment
- doxycyclin
- SMALL POX
- orthopoxvirus
- airborne / contact
- Only when rash develops
- variola virus
- brick-shaped
- types
- ordinary
- modified
- flat
- hemorrhagic
- fatality rate 30%
- Clinical
- 12- to 14-day incubation period
- high fever, malaise, headache & backache
- Maculopapular rash
- mucosa of the mouth and pharynx, face, and
forearmsthe trunk and legs .
- develop into pustules
- scarring
- result from the destruction of sebaceous
glands > shrinking of granulation
tissue > fibrosis
- Treatment
- No antiviral effective for smallpox
- Smallpox VS chicken pox
- Laboratory
- Growth of the virus in cell
culture or on
chorioallantoic egg
membrane
- pustular fluid
- Electron microscopic
- brick-shaped