credits bmbl December 7 '06.doc - Central Michigan University

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Agent Summary Statements – Bacterial Agents readily inactivate the toxin and are recommended for decontamination of work surfaces and for spills. Autoclaving of contaminated materials also is appropriate. BSL-3 practices, containment equipment, and facilities are required for activities with a high potential for aerosol or droplet production, and for those involving large quantities of the organism or of the toxin. ABSL-2 practices, containment equipment, and facilities are recommended for diagnostic studies and titration of toxin. SPECIAL ISSUES Vaccines A pentavalent (A, B, C, D and E) botulinum toxoid vaccine (PBT) is available through the CDC as an IND. Vaccination is recommended for all personnel working in direct contact with cultures of C. botulinum or stock solutions of botulinum neurotoxin (BoNT). Due to a recent decline in immunogenicity of available PBT stocks for some toxin serotypes, the immunization schedule for the PBT recently has been modified to require injections at 0, 2, 12, and 24 weeks followed by a booster at 12 months and annual boosters thereafter. Post-Exposure Treatment An equine antitoxin product is available for treatment of patients with symptoms consistent with botulism. However, due to the risks inherent in equine products, treatment is not provided as a result of exposure unless botulism symptoms are present. Select Agent C. botulinum toxin is a Select Agent requiring registration with CDC and/or USDA for possession, use, storage and/or transfer. See Appendix F for additional information. Transfer of Agent Importation of this agent may require CDC and/or USDA importation permits. Domestic transport of this agent may require a permit from USDA/APHIS/VS. A DoC permit may be required for the export of this agent to another country. See Appendix C for additional information. Agent: Clostridium tetani and Tetanus toxin Clostridium tetani is an anaerobic endospore-forming gram-positive rod found in the soil and an intestinal tract commensal. It produces a potent neurotoxin, tetanospasmin, that causes tetanus, an acute neurologic condition characterized by painful muscular contractions. Tetanospasmin is an exceedingly potent, high molecular weight protein toxin, consisting of a heavy chain (100kD) subunit that binds the toxin to receptors on neuronal cells and a light chain (50kD) subunit that blocks the release of inhibitory neural transmitter molecules within the central nervous system. The incidence of tetanus in the United States has declined steadily since the introduction of tetanus toxoid vaccines in the 1940’s. 62 Occupational Infections 150
Agent Summary Statements – Bacterial Agents Although the risk of infection to laboratory personnel is low, there have been five incidents of laboratory personnel exposure recorded. 4 Natural Modes of Infection Contamination of wounds by soil is the usual mechanism of transmission for tetanus. Of the 130 cases of tetanus reported to CDC from 1998 through 2000, acute injury (puncture, laceration, abrasion) was the most frequent predisposing condition. Elevated incidence rates also were observed for persons aged over 60 years, diabetics, and intravenous drug users. 63 When introduced into a suitable anaerobic or microaerophilic environment, C. tetani spores germinate and produce tetanospasmin. The incubation period ranges from 3 to 21 days. The observed symptoms are primarily associated with the presence of the toxin. Wound cultures are not generally useful for diagnosing tetanus. 64 LABORATORY SAFETY The organism may be found in soil, intestinal, or fecal samples. Accidental parenteral inoculation of the toxin is the primary hazard to laboratory personnel. Because it is uncertain if tetanus toxin can be absorbed through mucous membranes, the hazards associated with aerosols and droplets remain unclear. Containment Recommendations BSL-2 practices, containment equipment, and facilities are recommended for activities involving the manipulation of cultures or toxin. ABSL-2 practices, containment equipment, and facilities are recommended for animal studies. SPECIAL ISSUES Vaccines The vaccination status of workers should be considered in a risk assessment for workers with this organism and/or toxin. While the risk of laboratory-associated tetanus is low, the administration of an adult diphtheria-tetanus toxoid at 10-year intervals further reduces the risk to laboratory and animal care personnel of toxin exposures and wound contamination, and is therefore highly recommended. 62 The reader is advised to consult the current recommendations of the ACIP. 65 Transfer of Agent Importation of this agent may require CDC and/or USDA importation permits. Domestic transport of this agent may require a permit from USDA/APHIS/VS. A DoC permit may be required for the export of this agent to another country. See Appendix C for additional information. Agent: Corynebacterium diphtheriae Cornebacterium diphtheriae is a pleomorphic gram-positive rod that is isolated from the nasopharynx and skin of humans. The organism is easily grown in the 151
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Biosafety in Microbiological and Bi
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SECTION VIII-H: Prion Diseases 299
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Forward Biosafety in Microbiologica
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Editors: L. Casey Chosewood, MD Dir
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Guest Editors: Matthew J. Arduino,
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Charles B. Millard, PhD Lieutenant
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Robert Bull Karen B. Byers Jane Cap
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Thomas L. Miller Douglas M. Moore M
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Robert Yarchoan Uri Yokel Lisa Youn
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Introduction laboratories chose not
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Introduction RISK CRITERIA FOR ESTA
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Introduction BMBL includes an impor
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Section II Biological Risk Assessme
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Biological Risk Assessment informat
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Biological Risk Assessment The NIH
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Biological Risk Assessment effectiv
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Biological Risk Assessment Third, m
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Biological Risk Assessment 14. Oxma
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Principles of Biosafety Safety equi
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Principles of Biosafety Often an in
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Principles of Biosafety Four standa
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Principles of Biosafety 4. Centers
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Laboratory Biosafety Level Criteria
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Section V Vertebrate Animal Biosafe
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Vertebrate Animal Biosafety Level C
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Page 99 and 100: Vertebrate Animal Biosafety Level C
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Agent Summary Statements - Parasiti
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• Section VIII-D: Rickettsial Age
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Agent Summary Statements - Ricketts
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Agent Summary Statements - Ricketts
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• Section VIII-E: Viral Agents Ag
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Agent Summary Statements - Viral Ag
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Agent Summary Statements - Arboviru
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• Section VIII-G: Toxin Agents Se
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Agent Summary Statements - Toxins i
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Agent Summary Statements - Toxins A
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Agent Summary Statements - Toxins L
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• Section VIII-H: Prion Diseases
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Agent Summary Statement - Prion Dis
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Appendix A Proper maintenance of ca
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Appendix A declined. However, in ma
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Appendix A It is possible to exhaus
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Appendix A 4. The Class II, Type A2
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Appendix A prohibited. Furthermore,
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Appendix A plastic wrappers, pipett
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Appendix A touch-plate microburners
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Appendix A SECTION VI FACILITY AND
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Appendix A Development of Containme
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Appendix A C. Airflow Smoke Pattern
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Appendix A TABLES Table 1. Selectio
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Appendix A Table 3. Field Performan
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Appendix A FIGURES Figure 1. HEPA f
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Appendix A Figure 3. The Class II,
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Appendix A Figure 5B. The Class II,
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Appendix A Figure 8. The Class III
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Appendix A Figure 9B. The vertical
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Appendix A Figure 11. A typical lay
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Appendix A REFERENCES 1. Centers fo
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Appendix B Decontamination and Disi
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Appendix B surfaces are contaminate
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Appendix B TABLE 1 DESCENDING ORDER
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Appendix B dioxide gas exits the ge
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Appendix B d The effectiveness of a
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Appendix C Transportation of Infect
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Appendix C 1600 Clifton Road, N.E.,
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Appendix C disease in humans or in
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Appendix C Biological specimen, Cat
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Appendix D Agriculture Pathogen Bio
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Appendix D simultaneous opening of
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Appendix D 14. Pathological inciner
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Appendix D Wastes and other materia
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Appendix D Camelpox virus b a, b, c
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Appendix D SPECIAL ISSUES The impor
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Appendix D required by the USDA and
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Appendix D depression, anorexia, an
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Appendix D laboratory with enhancem
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Appendix D five day period of conta
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Appendix D slaughterhouses or indus
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Appendix D virus does not cause any
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Appendix D NDV is classified in the
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Appendix D movement permit is requi
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Appendix D Spring Viremia of Carp V
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Appendix D REFERENCES 1. Hess WR. A
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Appendix D 37. Alexander DJ. Newcas
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Appendix E Arthropod Containment Gu
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Appendix F Select Agents and Toxins
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Appendix G IPM issues and requireme
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Appendix H Working with Human, NHP
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Appendix I Guidelines for Work with
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decontaminated periodically, for ex
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0.25N, and/or sodium hypochlorite (
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k Irradiation causes a dose-depende
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7. Morin R, Kozlovac J. Biological
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Appendix J NIH Oversight of Researc
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Appendix K Resources for Informatio
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Appendix K E-mail: http://www2.gsu.
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Appendix K and http://www.who.int/c
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Appendix L HEPA High Efficiency Par
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