Agents |
Persistence in the transmission environment
Level 1: Years
Level 2: 8-24 hours
Level 3: <1 hour |
Bioterrorism dissemination |
Infective Dose |
Inhalation Anthrax |
Level 1: Very persistent |
-Postal package
- air dispersal and transmission
- no person to person transmission |
8,000-50,000 spores |
Plague Yersinia pestis |
Level 3: not persistent |
-Airborne (aerosol attacks), - 2nd transmission close contact (droplet borne) |
100 – 500 organisms |
Smallpox |
Level 3: not persistent |
Airborne (aerosol attacks), close contact (droplet borne, fomites) dissemination of contaminated bedding and clothing |
Assumed low (10-100 organisms) |
Tularaemia |
Level 1: Very persistent |
airborne inhalation |
10-50 organisms |
Viral hemorrhagic fevers |
Level 2; Persistent |
Surfaces, food |
1 – 10 organisms |
Brucellosis |
Level 2; persistent |
Surfaces, Aerosols, Food |
10-100 organisms |
Q-fever Coxiellaburnetii |
Level 1; Very persistent |
Air, surfaces |
1 – 10 organisms |
Ricin toxin |
Level 1; very persistent |
Air, food, or water. |
3-5 mg/kg, LD50
in mice |
|
