Factors of Biological Risk Assessments

Biological Agent

  • Pathogenicity  
  • Virulence
  • Environment
  • Host
  • Mode of Transmission
  • Viability
  • Immunizations & Treatments

Laboratory Procedures

  • Creation of Aerosols & Droplets
  • Use of Sharps
  • Use of Live Animals

Laboratory Staff

  • Training & Proficiency
  • Knowledge & Experience

Routes of Entry

  • Absorption
    • Non-Intact Skin
    • Eyes
    • Mucus Membranes
  • Injection
    • Contaminated needle or sharps
  • Ingestion
    • Eating
    • Applying lip balm
  • Inhalation
    • Breathing

Routes of Transmission

  • Contact
    • Direct Contact
    • Indirect Contact
    • Droplet Contact
  • Vehicle-borne
    • Contaminated Food
    • Contaminated Water
    • Blood
    • Tissues/Organs
  • Airborne
    • Droplet Nuclei
    • Dust
  • Vector-borne
    • Insects
    • Arthropods

 

Biological Safety Levels

Biological safety levels consist of combinations of laboratory practices and techniques, safety equipment, and laboratory facilities to appropriately safeguard against the hazards and risks associated with the specific work activities.