Estimating Aerosol Hazards from an Anthrax Letter

PDF

Authors
  1. Ho, J.
  2. Duncan, S.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN)
Abstract
Events following the anthrax letter incidences in 2001 changed many previously held assumptions regarding biological aerosol hazards. As there were significant fatalities resulting from the sorting of a single anthrax letter, it suggests there is a need to reevaluate how best to measure biological aerosols and to use the information to make accurate predictions. This paper describes the biological aerosol created from manipulating envelopes containing Bacillus subtilis globigii spores (a simulant for anthrax). In addition, the measurements on dispersion of spores from an envelope processed by a mail sorter provide important dynamic aerosol characteristics, information previously unavailable for health risk assessment. The findings produced a number of significant aerosol dosage estimates related to spore contaminated letters. Graphic presentations show significant hazard in handling anthrax-laced letters. Aerosol particle dynamics are described and specific lethal dosage values are listed for a range of activities; these will be useful in assisting the modeling community to create more realistic predictions in hazard assessment studies.
Report Number
DRDC-SUFFIELD-SL-2003-087 — Scientific Letter
Date of publication
08 Nov 2004
Number of Pages
20
Reprinted from
Journal of Aerosol Science, vol 36, 2005, p 701-719
DSTKIM No
CA026009
CANDIS No
523767
Format(s):
Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: