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

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Agent Summary Statements – Bacterial Agents Pathogenic C. sp. may occur in fecal specimens in large numbers. C. fetus subsp. fetus may also be present in blood, exudates from abscesses, tissues, and sputa. The primary laboratory hazards are ingestion and parenteral inoculation of C. jejuni. The significance of aerosol exposure is not known. Containment Recommendations BSL-2 practices, containment equipment, and facilities are recommended for activities with cultures or potentially infectious clinical materials. ABSL-2 practices, containment equipment, and facilities are recommended for activities with naturally or experimentally infected animals. SPECIAL ISSUES 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: Chlamydia psittaci (Chlamydophila psittaci), C. trachomatis, C. pneumoniae (Chlamydophila pneumoniae) Chlamydia psittaci, C. pneumoniae (sometimes called Chlamydophila psittaci and Chlamydophila pneumoniae) and C. trachomatis are the three species of Chlamydia known to infect humans. Chlamydiae are nonmotile, gram-negative bacterial pathogens with obligate intracellular life cycles. These three species of Chlamydia vary in host spectrum, pathogenicity, and in the clinical spectrum of disease. C. psittaci is a zoonotic agent that commonly infects psittacine birds and is highly pathogenic for humans. C. trachomatis is historically considered an exclusively human pathogen and is the most commonly reported bacterial infection in the United States. C. pneumoniae is considered the least pathogenic species, often resulting in subclinical or asymptomatic infections in both animals and humans. Occupational Infections Chlamydial infections caused by C. psittaci and C. trachomatis lymphogranuloma venereum (LGV) strains were at one time among the most commonly reported laboratory-associated bacterial infections. 26 In cases reported before 1955, 4 the majority of infections were psittacosis, and these had the highest case fatality rate of laboratoryacquired infectious agents. The major sources of laboratory-associated psittacosis are contact with and exposure to infectious aerosols in the handling, care, or necropsy of naturally or experimentally infected birds. Infected mice and eggs also are important sources of C. psittaci. Most reports of laboratory-acquired infections with C. trachomatis attribute the infection to inhalation of large quantities of aerosolized organisms during purification or sonification procedures. Early reports commonly attributed infections to exposure to aerosols formed during nasal inoculation of mice or inoculation of egg yolk 146
Agent Summary Statements – Bacterial Agents sacs and harvest of chlamydial elementary bodies. Infections are associated with fever, chills, malaise, and headache; a dry cough is also associated with C. psittaci infection. Some workers exposed to C. trachomatis have developed conditions including mediastinal and supraclavicular lymphadenitis, pneumonitis, conjunctivitis, and keratitis. 53 Seroconversion to chlamydial antigens is common and often striking although early antibiotic treatment may prevent an antibody response. Laboratory-associated infections with C. pneumoniae have been reported. 54 Exposed workers were asymptomatic and infection was diagnosed by serology. The route of infection was attributed to inhalation of droplet aerosols created during procedures associated with culture and harvest of the agent from cell culture. With all species of Chlamydia, mucosal tissues in the eyes, nose, and respiratory tract are most often affected by occupational exposures that can lead to infection. Natural Modes of Infection C. psittaci is the cause of psittacosis, a respiratory infection that can lead to severe pneumonia requiring intensive care support and possible death. Sequelae include endocarditis, hepatitis, and neurologic complications. Natural infections are acquired by inhaling dried secretions from infected birds. Psittacine birds commonly kept as pets (parrots, parakeets, cockatiels, etc.) and poultry are most frequently involved in transmission. C. trachomatis can cause a spectrum of clinical manifestations including genital tract infections, inclusion conjunctivitis, trachoma, pneumonia in infants, and LGV. The LGV strains cause more severe and systemic disease than do genital strains. C. trachomatis genital tract infections are sexually transmitted and ocular infections (trachoma) are transmitted by exposure to secretions from infected persons through contact or fomite transmission. C. pneumoniae is a common cause of respiratory infection; up to 50% of adults have serologic evidence of previous exposure. Infections with C. pneumoniae are transmitted by droplet aerosolization and are most often mild or asymptomatic, although there is a body of evidence associating this agent with chronic diseases such as atherosclerosis and asthma. LABORATORY SAFETY C. psittaci may be present in the tissues, feces, nasal secretions and blood of infected birds, and in blood, sputum, and tissues of infected humans. C. trachomatis may be present in genital, bubo, and conjunctival fluids of infected humans. Exposure to infectious aerosols and droplets, created during the handling of infected birds and tissues, are the primary hazards to laboratory personnel working with C. psittaci. The primary laboratory hazards of C. trachomatis and C. pneumoniae are accidental parenteral inoculation and direct and indirect exposure of mucous membranes of the eyes, nose, and mouth to genital, bubo, or conjunctival fluids, cell culture materials, and fluids from infected cell cultures or eggs. Infectious aerosols, including those that may be created as a result of centrifuge malfunctions, also pose a risk for infection. Containment Recommendations 147
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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 95 and 96: Vertebrate Animal Biosafety Level C
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• Section VIII-C: Parasitic Agent
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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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Agent Summary Statements - Toxins e
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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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