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EMD 545b Biosafety, Biosecurity, and the Evaluation of Biohazards

EMD 545b Biosafety, Biosecurity, and the Evaluation of Biohazards. Course Lecture #1. Lecture #1 Outline. Course intro, objectives, syllabus review Texts, handouts, microbiology assessment Student Interests (goals of course) Biosafety (then and now) Biohazards: here, there, everywhere

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EMD 545b Biosafety, Biosecurity, and the Evaluation of Biohazards

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  1. EMD 545bBiosafety, Biosecurity,and the Evaluationof Biohazards Course Lecture #1

  2. Lecture #1 Outline • Course intro, objectives, syllabus review • Texts, handouts, microbiology assessment • Student Interests (goals of course) • Biosafety (then and now) • Biohazards: here, there, everywhere • Profession of Biosafety, resources • Laboratory Acquired Infections

  3. Course Objectives • Illustrate science and profession of biosafety • Examine the application of biosafety in various settings • Provide a foundation in the principles of biohazard containment and control

  4. Course Syllabus • Lectures • 1st half of course • Tours • Building HVAC system, cooling tower • Biohazard containment facility • Animal facility tour • Guest speakers • Bioaerosol or “project” sampling location • Selected by student teams

  5. Course Syllabus • Projects • Risk assessment exercise (major) • Regulatory Policy comparison (minor) • Bioaerosol/env. micro sampling (major – team) • Facility commissioning exercise (minor – team) • Completed by group in class session • Point/counterpoint challenge (major – team) • Final Exam (major) • Open book(s), open notes and handouts

  6. Texts • Biosafety: Principles and Practices, 4th Ed. • CDC/NIH Biosafety in Microbiological and Biomedical Laboratories, 5th Ed. • NIH Guidelines for Research Involving Recombinant DNA Molecules (April 2002) • Handouts (hard copies, email, or online) • Previous coursework or experience in Micro or Molecular Biology?

  7. Students • Introductions • Student Interests • What do YOU hope to get out of the class? • Course Goals!!

  8. Biosafety • The consistent application of safety measures to minimize or prevent exposure to the person handling the agent, lab and building occupants, the community and the environment. • Key Safety Measures: • good microbiological work practices • safety and containment equipment • facility design consideration

  9. Biohazard • Biohazard n (1967): a biological agent or condition (as an infectious organism or insecure laboratory conditions) that constitutes a hazard to man or his environment; also a hazard posed by such an agent or condition. • Webster’s 9th New Collegiate Dictionary, Miriam- Webster Inc. Publishers, Springfield, MA USA, 1985

  10. Biohazard Settings/Biosafety Applications • Where?

  11. Biohazard Settings/Biosafety Applications • Research, including: • human & animal pathogens, select agents (bioterrorism) • toxins of biological origin • rDNA research, Human Gene Transfer, plants, animals, large scale • shipping, transport, import, export, permits • training (BBP, TB, infection control, shipping, Biosafety, BSL-3, work practices, BSC’s) • field work, work abroad (feral animal, insects, arthropods)

  12. Biohazard Settings/Biosafety Applications • Clinical/Hospital Settings (helping sick people) • micro labs, in- and out-patient facilities, infirmaries • infection control, standard precautions, airborne precautions (TB, measles, varicella, flu) • social workers, divinity and law school volunteers, students

  13. Biohazard Settings/Biosafety Applications • Buildings/IAQ • fungi, SBS, cooling towers, HVAC, floods, leaks, allergens • Emergency Response • police, fire, plant maintenance personnel, public health officials • biohazard spills, exposures, incident review • Environmental Issues • mosquito control program, anthrax sampling (mailrooms) • food sanitation • Other • clean air device monitoring (biosafety cabinets, other hoods) • facility design, renovation, construction, and commissioning

  14. Biohazard Settings/Biosafety Applications • Cruise ships, airplanes, trains, buses, other crowded conditions • Homeless shelters, prisons, schools • Farms, agricultural settings (zoonotic agents) • Hunting (gutting/dressing wildlife) • Bioterrorism (local area response) • Production of medical products, vaccines, drugs, biologics • Outbreak investigations, war, refugee camps • Other???

  15. OEHSBiosafety • “We don’t make the jobs you do….. • We make the jobs you do safer.”

  16. Biosafety: Historical Perspective (Seymour Block) • Homer (Odyssey XXII)- burned sulfur for fumigation, 800BC • Hippocrates- involvement of fomes/fomites in disease process, 4th century BC • Bible • move campsites daily, care of wastes, strict dietary/cleanliness • rules/regulations regarding lepers • (ISOLATION) • burn or boil clothing and equipment • Aristotle - advised Alexander the Great (boil water, bury excreta)

  17. Biosafety: Historical Perspective (Seymour Block) • Susruta (Hindu physician)- cleaning/fumigation of OR before and after operations, 500 AD • Great plagues- burn victims clothes, burned bodies on 10 foot poles, unique PPE worn by physicians (perfume in beak), full body coverage, Middle Ages • Girolamo Fracastoro- referred to “seeds” or “germs” of disease. Identified 3 sources of contagion (contact, fomites, air). 1478-1553 • Venice Magistry of Health- fumigated cargo and mail from ships, 1438

  18. Biosafety: Historical Perspective (Seymour Block) • Leeuwenhoek- studied effect of chemicals on “little animals” under microscope, 1676 • Cotton Mather- 1st in America to vaccinate against smallpox (with smallpox, Jenner used Cowpox), 1720 • James Lind- hygiene as sea (disinfection, filtration of water, cleaning and ventilation of sick bay, special clothes for physicians), 1757 • Nicholas Appert- Canning method for food preservation, 1810 • John Pringle- sanitary trench disposal of waste in warfare

  19. Biosafety: Historical Perspective (Seymour Block) • Oliver Wendell Holmes (1843), Ignaz Semmelweis (1847) Identified spread of puerperal fever to patients from medical staff. Introduced hand washing to thwart spread. • Agostino Bassi (lawyer)- suggested use of germicides, patient isolation, and decontamination of clothes and excreta (1835) • Louis Pasteur- Flame sterilization of surgical tools, heat sterilization of bandages before use on wounds, risk assessment enters forefront with his quote “Chance favors the prepared mind.” (1880’s)

  20. Biosafety: Historical Perspective (Seymour Block) • Joseph Lister- antiseptic use on open wounds (phenol), poured directly into wounds, lowered infection rate from 90 - 15%, (1860’s - 1880’s) • Robert Koch- sterile technique, pure culture, use of solid media, tested over 70 disinfectants, (1881) • Dakin- 0.5% hypochlorite used to disinfect wounds in WWI • WWII-1st war with less deaths from disease than from battle wounds (disinfectants in common use)

  21. Pertinent Biosafety Events • 1918- Flu pandemic • 1928- Discovery of antibiotics • 1930’s - present - Biowarfare research continues (Japan’s Unit 731, many other examples before and after) • 1930’s- U.S. Malaria Control Division (later CDC&P) • 1940’s- Invention of Electron Microscope • Can now see viruses! • 1950’s -present- Viral Hemorrhagic Fever outbreaks • 1967- Marburg virus outbreak in lab • 1966-1968- development of Biohazard Symbol • 1969- Lassa Fever LAI’s at Yale • 1970- OSHA, EPA created (OSHA General Duty Clause)

  22. Pertinent Biosafety Events • 1974- Classification of Etiologic Agents on Basis of Hazard (Biosafety Levels 1 - 4) • 1976- NIH rDNA Guidelines • 1976- Ebola outbreak • 1978- Smallpox LAI, England • 1979- Laboratory Safety Monograph (NIH) • 1979- Anthrax release from military research lab, Sverdlosk, Russia (>60 deaths) • 1980-1984 - CDC/NIH Biosafety handbook, WHO text • 1981- 1st HIV cases reported

  23. Pertinent Biosafety Events • 1986- EPA Medical Waste Requirements • 1988-1994- needles/syringes found on beaches on east coast, Medical Waste Tracking Act established • 1988-1992- resurgence of TB cases, MDR-TB observed • 1988-1991- OSHA Bloodborne Pathogens Standard • 1990- 1st Human Gene Transfer trial initiated (ADA) • 1993- Hantavirus outbreak, Southwest USA • 1994- Publication of Richard Preston’s, The Hot Zone • 1994- Sabia LAI, Yale • 1995 - Hendra virus, Australia/Avian flu, Hong Kong • 1996- Mad Cow Disease (BSE)

  24. Pertinent Biosafety Events • 1997- Influenza A Virus (H5N1) in poultry, Hong Kong • 1999- West Nile Virus, 1st time ever in U.S. • 1999- 1st HGT death, UPenn OTC Protocol • 1999- Nipah Virus, Malaysia (high mortality rate) • 2001- Anthrax letters shipped via US Mail • 2002- HGT Trials suspended after 2nd case of leukemia caused by integration of “defective” retroviral vector in host chromosome • 2003 - SARS Virus • 2004 – Bird Flu (H5N1) concerns return • 2004 – SARS LAI’s, Tularemia LAI’s (BU)

  25. Pertinent Biosafety Events • 2004 – TB Infections, Washington State (associated w/ Madison Aerosol Chamber). • 2004 – Occular Vaccinia, Pennsylvania (route of exposure unknown). • 2005 – Vaccinia infection from needlestick, Connecticut (animal research experiment) • 2006 – Brucella infections – Texas A&M (associated w/ Madison Aerosol Chamber). 3 additional seroconversions to C. burnetii identified. • 2007 – Significant non-compliance w/ Select Agent Regulations identified at Texas A&M (SA Research shut down). • 2007 – U.S. Federal hearings on oversight of BSL3 and BSL4 laboratories.

  26. Laboratory Acquired Infections (Harding & Byers) • Infections acquired through lab or lab related activities (symptomatic or asymptomatic) • LAI’s came with golden age of Microbiology • Typhoid 1885 • Brucellosis 1887 • Tetanus 1893

  27. Sulkin & Pike 1930 - 1978 4,079 LAI’s 168 fatalities Brucellosis Q-Fever Hepatitis Typhoid Fever Tularemia Tuberculosis Dermatomycosis VEE Harding & Byers 1979 - 2001 1,267 over LAI’s 22 fatalities M. tuberculosis Q Fever Hantavirus Arboviruses Hepatitis B Virus Brucella Salmonella Shigella LAI’s (1930 - 2001) Harding & Byers

  28. LAI’s 1930 - 2001 (Harding & Byers) • Total: 5, 346 LAI’s • 190 deaths • underreporting likely • many more sub-clinical infections? • Percentage that knew route of exposure similar from 1930 - 1978, and from 1979 - 1999! • Name that percentage?

  29. Secondary Infections (LAI’s)(Harding & Byers) • The transfer of an occupationally acquired infection to another person outside of the work environment. • Uncommon (8 reported 1979 - 2001) • (2) Brucella- sexual transmission • (2) Salmonella- microbiologist prepared dinner for family (one death) • (1) Leptospira interrogans- through breast milk • (2) Bordetella pertussis- to family members • (1) B-Virus – spouse of injured animal care worker

  30. Laboratory Acquired Infection (LAI) Summaries • PA Vaccinia LAI ocular infection (2004) • Route unknown • Breach in aerosol containment/poor work practices • Failure to consistently wear gloves • Absence of face protection while working outside of primary containment • Failure to confine all procedures to biosafety cabinet • Inadequate decontamination of contaminated work surfaces • Possible hand to eye to contact during experiments • Lack of awareness of signs/symptoms of disease

  31. Laboratory Acquired Infection (LAI) Summaries • Vaccinia infection from needlestick (2005) • Inadequate oversight, training • Insufficient risk assessment, poor SOP utilized • Poor work practices • Transport of needles by hand to sharps container outside of room • Recap of contaminated needles by hand • Poor exposure response (delay in skin washing) • No report of exposure (State reportable infection!) • Secondary bacterial infection (required hospitalization)

  32. Laboratory Acquired Infection (LAI) Summaries • Texas A&M Brucella infection (2006) • Use of Madison Aerosol chamber • Insufficient Risk Assessment for Agent and Operation • Poor training of staff on use of chamber • No secondary containment of device or animals removed from device (aerosols from hair of animals) • No recognition of signs/symptoms of Brucella infection • Untrained, unregistered researcher • 3 Additional Q-Fever Infections (asymptomatic) unreported • No immediate report of Select Agent infections to CDC (10 month delay)

  33. Laboratory Acquired Infection (LAI) Summaries • BU Tularemia infections (2004) • 3 cases – not identified by institution • Discovered by personal physicians or ER • No recognition of signs/symptoms of disease • Attenuated BSL2 (non Select Agent strain?) • If rDNA – in violation of NIH Guidelines! • Lowering containment from BSL3 to BSL2 must be authorized by NIH OBA • Inadequate risk assessment performed • Inadequate containment, PPE, work practices • Some procedures conducted on open bench

  34. Laboratory Acquired Infection (LAI) Summaries • Monkey B-Virus Infection (fatal), Georgia, 1997 (Yerkes Regional Primate Center) • Ocular exposure during transport of non-human primate • Insufficient training identified • No agent-specific training on hazards associated w/ NHP’s • No emergency/exposure response training provided • Insufficient personal protective equipment • No face protection provided • Inadequate barrier (open cage) used for transport

  35. Biosafety Profession • Resources: • American Biological Safety Association www.absa.org • Centers for Disease Control & Prevention www.cdc.gov • National Institutes of Health www.nih.gov • World Health Organization www.who.org

  36. Biosafety Profession • Certified Biological Safety Professional (CBSP) - Exam Task List • Disinfection, decontamination, sterilization • Work practices and procedures • Risk assessment/hazard identification • Regulatory aspects, standards & guidelines • Program Management • Equipment Operation and Certification • Facility Design

  37. Biosafety Profession • Also requires knowledge of: • immunology, molecular biology, epidemiology • microbiology, cell biology • animal care and use, cell culture techniques • immunizations, risk management • aerobiology

  38. Biosafety Profession • Sources of information/training • ABSA Professional Development short courses • offered at annual conference and spring seminar • local chapters and affiliates of ABSA • Duke University MPH and DRPH degrees • NIH Biosafety Training Program (BSL3/BSL4) • Occ. Health/Public Health/Env. Health programs throughout U.S. and world • Short courses (Harvard SPH, Eagleson Institute, Canada, AIHA, ASM, APIC, NSC, CSHEMA, etc.) • Mentors (other biosafety officers, laboratorians, biosafety committee members, university courses (learning is ongoing!)

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