Bioterrorism
Total Page：16
File Type：pdf, Size：1020Kb
BIOTERRORISM Edited by Stephen A. Morse Bioterrorism Edited by Stephen A. Morse Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2012 InTech All chapters are Open Access distributed under the Creative Commons Attribution 3.0 license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech, authors have the right to republish it, in whole or part, in any publication of which they are the author, and to make other personal use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. As for readers, this license allows users to download, copy and build upon published chapters even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials, instructions, methods or ideas contained in the book. Publishing Process Manager Sasa Leporic Technical Editor Teodora Smiljanic Cover Designer InTech Design Team First published March, 2012 Printed in Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from [email protected] Bioterrorism, Edited by Stephen A. Morse p. cm. ISBN 978-953-51-0205-2 Contents Preface VII Chapter 1 Current Methods for Detecting the Presence of Botulinum Neurotoxins in Food and Other Biological Samples 1 Luisa W. Cheng, Kirkwood M. Land and Larry H. Stanker Chapter 2 Detection of Bacillus Spores by Surface-Enhanced Raman Spectroscopy 17 Stuart Farquharson, Chetan Shende, Alan Gift and Frank Inscore Chapter 3 Staphylococcal Enterotoxins, Stayphylococcal Enterotoxin B and Bioterrorism 41 Martha L. Hale Chapter 4 Diagnostic Bioterrorism Response Strategies 65 Rickard Knutsson Chapter 5 Recent Advancement in the Development of Vaccines Against Y. pestis – A Potential Agent of Bioterrorism 83 Riyasat Ali and D.N. Rao Chapter 6 Botulinum Neurotoxins 107 Robert P. Webb, Virginia I. Roxas-Duncan and Leonard A. Smith Chapter 7 Ricin Perspective in Bioterrorism 133 Virginia I. Roxas-Duncan and Leonard A. Smith Chapter 8 Spatio-Temporal Disease Surveillance 159 Ross Sparks, Sarah Bolt and Chris Okugami Chapter 9 Rickettsia and Rickettsial Diseases 179 Xue-jie Yu and David H. Walker Preface Pathogenic microorganisms and their toxins have always posed a significant threat to humans, animals, and plants that become exposed and infected naturally. But now there is a newly recognized threat – the deliberate use of pathogenic microorganisms and toxins as weapons in acts of bioterrorism or in the commission of biocrimes. Long before the germ theory of disease was understood, man knew that pathogenic microorganisms and toxins were useful as weapons. However, as the twentieth century came to a close, the perceived difficulties in production, weaponization, and deployment of these biological weapons as well as a belief that moral restraints would preclude the use of these weapons gave many a false sense of security. Recently, a number of events have served to focus attention on the threat of terrorism and the potential for the use of biological weapons against the military, civilian populations, or agriculture for the purpose of causing illness, death, or economic loss. This threat is a significant concern in the United States as well as internationally. Bioterrorist attacks occur as one of two scenarios: overt and covert. In either scenario, biologic agents could be introduced into populations by several routes, including aerosol; contamination of food, water, or medical products; fomites; or the release of infected arthropod vectors. The deliberate nature of such dissemination will often be obvious, as in the case of multiple mailed letters containing anthrax spores (ie overt). Because we currently lack the ability to conduct extensive real-time monitoring for the release of a biologic agent, a covert release of a microorganism of toxin in a population would be likely to go unnoticed for some time, with individuals exposed leaving the attack area before the act of terrorism became evident. Because of the incubation period, the first signs that a microorganism or toxin has been released may not become apparent until hours or weeks later, when individuals become ill and seek medical care. Bioterrorism presents many challenges, particularly when compared to chemical, radiological, or nuclear terrorism. These challenges reflect the dual-use nature of many technologies that can be used for either beneficial purposes or bioterrorism; intentional threats that can coexist with similar and naturally occurring threats; the complexity of the interaction of the threat with the environment, the human immune system, the society/social structure; and rapid advances in biotechnology. Preparing for and responding to bioterrorism in the twenty-first century has brought together diverse VIII Preface disciplines with different backgrounds and cultures, for example intelligence agencies, public health and medical professionals, law enforcement officers, scientists, and the commercial sector. It remains a learning process. Many biological agents can cause illness in humans, but not all are capable of affecting public health and medical infrastructures on a large scale. As part of an effort to focus public health preparedness efforts, the United States Centers for Disease Control and Prevention (CDC) developed a prioritized list of biological agents taking into consideration criteria such as high morbidity and mortality; potential for person-to- person transmission, directly or by vector; low infectious dose and high infectivity by aerosol, with a commensurate ability to cause large outbreaks; ability to contaminate food or water supplies; lack of a specific diagnostic test and/or effective treatment; lack of a safe and effective vaccine; potential to cause anxiety in the general public and in healthcare workers; and potential for weaponization. The final category assignments (A, B, or C) of agents for public health preparedness were based on an overall evaluation of the ratings the agents received in the aforementioned criteria. Agents placed in Category A (eg Yersinia pestis, botulinum neurotoxins) were considered to have a moderate to high potential for large-scale dissemination, the greatest potential for adverse public health impact with mass casualties, and a requirement for broad- based public health preparedness efforts. Agents placed in Category B (eg rickettsia, ricin, staphylococcal enterotoxins) also have some potential for large-scale dissemination with resultant illness, but generally cause less illness and death and, therefore, would be expected to have lower public health and medical impact. Biological agents that were not believed to present a high bioterrorism risk to public health but which could emerge as future threats, as scientific understanding of these agents improved were placed in Category C. This book was written to provide a resource to scientists, epidemiologists, clinicians, and others in the field of bioterrorism defense. Not all possible topics are described. Instead, representative topics, authored by international experts provide a unique and state-of-the-art perspective on this field. The book consists of this preface and nine other chapters that address the broad areas of (1) detection capabilities (ie spatio- temporal disease surveillance; diagnostic bioterrorism response strategies; methods for detecting the presence of botulinum neurotoxins in food and other biological samples; and detection of bacillus spores by surface-enhanced Raman spectroscopy) and (2) characteristics of specific pathogenic microorganisms and toxins (ie Rickettsia and Rickettsial diseases; recent advances in the development of vaccines against Yersinia pestis; botulinum neurotoxins; ricin; and staphylococcal enterotoxins). Dr. Stephen A. Morse Associate Director of Science, Division of Bioterrorism Preparedness and Response, and Director of the Environmental Microbiology Program, CDC, USA 1 Current Methods for Detecting the Presence of Botulinum Neurotoxins in Food and Other Biological Samples Luisa W. Cheng1, Kirkwood M. Land2 and Larry H. Stanker1 Foodborne Contaminants Research Unit, Western Regional Research Center, 1Agricultural Research Service, U.S. Department of Agriculture, Albany, CA, 2Department of Biological Sciences, University of the Pacific, Stockton, CA, USA 1. Introduction Botulinum neurotoxins (BoNTs) are some of the most lethal human bacterial toxins and the causative agent of botulism (Arnon et al., 2001; Simpson, 2004). The usual routes of intoxication for BoNTs are oral ingestion of clostridial spores or pre-formed toxin, manifested as infant, foodborne and adult onset botulism. An increasingly common route of intoxication is associated with intravenous drug use resulting in wound botulism. BoNTs are also classified as Select Agents and have been used as agents of bioterrorism