Biohazard Safety Course

Lesson 1 • Biosafety Level Classification System

Explains the four biosafety levels, their criteria, and the agent types assigned to each. Connects classification to facility design and procedural requirements introduced later.

Lesson 2 • Defining Biological Hazards

Introduces the definition, scope, and sources of biological hazards in occupational and research settings. Provides the conceptual baseline for all subsequent risk assessment and control strategies.

Lesson 3 • Core Principles of Infection Control

Presents the hierarchy of controls applied to biological hazards: elimination, substitution, engineering, administrative, and PPE. Frames the decision-making model used throughout the course.

Lesson 4 • Regulatory and Institutional Frameworks

Surveys international and national regulatory bodies, institutional biosafety committees, and select agent programmes. Establishes compliance obligations workers encounter in practice.

Lesson 1 • Risk Assessment Methodology

Introduces qualitative and semi-quantitative risk assessment frameworks specific to biological agents. Establishes the structured process applied in all subsequent assessment exercises.

Lesson 2 • Exposure Scenario Analysis

Teaches identification and analysis of realistic exposure scenarios in laboratory, clinical, and field settings. Scenario analysis links agent characteristics to actual work tasks.

Lesson 3 • Vulnerable Population Considerations

Addresses immunocompromised workers, pregnant employees, and others with elevated susceptibility. Integrating vulnerability factors ensures equitable and complete risk assessments.

Lesson 4 • Risk Communication and Documentation

Covers how to communicate risk findings to supervisors, workers, and institutional committees clearly and accurately. Proper documentation supports regulatory compliance and incident review.

Lesson 1 • PPE Selection Principles

Establishes criteria for matching PPE type and protection level to identified exposure routes and agent risk groups. Correct selection prevents both under-protection and unnecessary burden.

Lesson 2 • Body and Skin Protection

Addresses glove selection, gowns, coveralls, and shoe covers for biological work. Emphasises material compatibility with disinfectants and agent penetration resistance.

Lesson 3 • Respiratory Protection for Biohazards

Covers respirator types from surgical masks to powered air-purifying and supplied-air respirators. Includes fit testing, seal checks, and limitations relevant to biological aerosols.

Lesson 4 • PPE Inspection, Maintenance, and Limitations

Teaches pre-use inspection criteria, storage conditions, reuse policies, and known PPE failure modes. Recognising limitations prevents false confidence in protection.

Lesson 1 • Centrifuges, Homogenisers, and Aerosol-Generating Equipment

Addresses aerosol risks from centrifuges, sonicators, and homogenisers and the containment controls required. Builds on cabinet knowledge by extending containment to bench-top equipment.

Lesson 2 • Safe Work Practices Inside Cabinets

Covers material placement, arm movement technique, and prohibited actions that disrupt cabinet airflow. Correct technique prevents contamination of the work zone and exposure to the operator.

Lesson 3 • Types of Biosafety Cabinets

Distinguishes Class I, II (A1, A2, B1, B2), and Class III cabinets by airflow design and protection scope. Correct cabinet selection is the foundation of primary containment strategy.

Lesson 4 • Animal Containment and Ventilated Caging

Covers individually ventilated cages, animal biosafety cabinets, and procedural controls for infected animal work. Extends containment principles to the unique hazards of in vivo research.

Lesson 1 • Autoclaving and Heat-Based Sterilisation

Covers steam sterilisation cycles, load configuration, biological indicator validation, and common failure modes. Autoclaving is the primary method for infectious waste and reusable equipment.

Lesson 2 • Gaseous and Vapor-Phase Decontamination

Addresses vaporised hydrogen peroxide, formaldehyde, and chlorine dioxide for room and equipment decontamination. These methods are required when liquid disinfectants cannot reach all surfaces.

Lesson 3 • Chemical Disinfectants and Their Applications

Surveys major disinfectant classes including halogens, aldehydes, quaternary ammonium compounds, and oxidising agents. Covers spectrum of activity, dilution, and material compatibility for each class.

Lesson 4 • Biological Waste Segregation and Disposal

Establishes categories of biological waste, container requirements, labelling, and approved treatment methods. Correct segregation at the point of generation is the first step in safe waste management.

Lesson 1 • Standard Microbiological Practices

Covers the baseline behaviours required in all biological laboratories regardless of biosafety level. These practices form the behavioural foundation that higher-level procedures build upon.

Lesson 2 • Specimen Collection and Transport

Covers primary container integrity, secondary containment, absorbent packaging, and labelling for biological specimens. Safe transport prevents exposure during movement within and between facilities.

Lesson 3 • Pipetting and Liquid Transfer Safety

Teaches mechanical pipetting devices, aerosol-reducing tips, and techniques for transferring infectious liquids safely. Liquid transfer is among the most frequent aerosol-generating tasks in biological work.

Lesson 4 • Safe Handling of Sharps and Needles

Addresses needle safety devices, recapping prohibition, sharps disposal, and post-exposure first aid. Sharps injuries are the most common route of laboratory-acquired infection.

Lesson 1 • Post-Incident Investigation and Reporting

Teaches root cause analysis, corrective action development, and regulatory reporting obligations after biological incidents. Investigation findings drive systemic improvements that prevent recurrence.

Lesson 2 • Exposure Incident Management

Covers immediate first aid, notification chains, medical evaluation, and post-exposure prophylaxis pathways. Rapid and correct response after exposure reduces infection risk and supports worker health.

Lesson 3 • Spill Response Procedures

Provides step-by-step protocols for small and large biological spills inside and outside containment. Correct immediate actions prevent aerosol spread and secondary contamination.

Lesson 4 • Biological Release and Evacuation Protocols

Addresses uncontrolled release scenarios, shelter-in-place decisions, evacuation routes, and emergency communication. Builds on spill response by scaling to facility-level emergencies.

Lesson 1 • Biosafety Programme Structure and Governance

Covers roles of biosafety officers, institutional committees, principal investigators, and workers in programme governance. Clear role definition ensures accountability at every level of the organisation.

Lesson 2 • Biosafety Culture and Behavioural Safety

Explores psychological safety, near-miss reporting culture, and leadership behaviours that reinforce safe practices. Culture determines whether written programmes translate into daily worker behaviour.

Lesson 3 • Biosafety Inspections and Audits

Provides tools for conducting laboratory inspections, gap analysis, and corrective action tracking. Regular audits identify drift from safe practices before incidents occur.

Lesson 4 • Continuous Improvement and Programme Metrics

Covers leading and lagging indicators, benchmarking, and programme review cycles for ongoing biosafety improvement. Metrics transform anecdotal observations into data-driven programme decisions.