In addition, an explosion will generate a wide range of particle sizes with only a fraction of the weaponized BW agent being aerosolized in particles of a size suitable for deposition in the lower respiratory tract. The efficiency of explosive munitions delivering a viable BW agent is in the range of I to 2 percent. Biological warfare agents are most effectively delivered as an aerosol. Larger particles either settle onto environmental surfaces, or are deposited in the upper respiratory tract and eliminated by mucociliary clearance. Aerosol generators capable of generating particles of optimal size are easily constructed by adapting available agricultural and industrial sprayers.
Dilution can reduce the concentration of pathogens and toxins below an effective level.
Therefore, a successful BW attack on a water system would have to occur after treatment. The University of Iowa. All rights reserved.