Efficient methods for large-area surface sampling of sites contaminated with pathogenic microorganisms and other hazardous agents: current state, needs, and perspectives.
The recovery operations following the 2001 attacks with Bacillus anthracis spores were complicated due to the unprecedented need for large-area surface sampling and decontamination protocols. Since this event, multiple reports have been published describing recovery efficiencies of several surface sampling materials. These materials include fibrous swabs of various compositions, cloth wipes, vacuum socks, and adhesive tapes. These materials have reported recovery efficiencies ranging from approximately 20% to 90% due to the many variations in their respective studies including sampling material, composition of surface sampled, concentration of contaminant, and even the method of deposition and sample processing. Additionally, the term recovery efficiency is crudely defined and could be better constructed to incorporate variations in contaminated surface composition and end user needs. While significant efforts in devising protocols for large-area surface sampling have been undertaken in the years since the anthrax attacks, there is still a general lack of consensus in optimal sampling materials and the methodology in which they are evaluated. Fortunately, sampling efforts are continuing to be supported, and the knowledge gaps in our procedures, methodology, and general understanding of sampling mechanisms are being investigated which will leave us better prepared for the future.
Edmonds
Jason M
JM
Edgewood Chemical Biological Center, United States Army, Department of Defense, 5183 Blackhawk Road, Aberdeen Proving Grounds, APGEA, MD 21010, USA. Jason.Edmonds1@us.army.mil
D004783:Environmental Microbiology; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis / Q000302:isolation & purification*; D008828:Microbiological Techniques / Q000379:methods* / Q000639:trends
D004785:Environmental Pollutants