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Biohazard Levels

biohazard level assessments by the CDC

At Choreology, we handle and clean a broad spectrum of biohazards with the utmost professionalism. Our teams are fully trained to manage all biohazard emergencies, ensuring safe and effective containment and resolution.

The term "biohazard" refers to biological substances that pose a threat to the health of living organisms, primarily humans.

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Viruses (Biohazard Levels 2-4)

  1. HIV (Human Immunodeficiency Virus) - Level 3

  2. Hepatitis B and C viruses - Level 2

  3. Influenza viruses - Level 2

  4. Coronavirus (e.g., SARS-CoV-2) - Level 3

  5. Ebola virus - Level 4

Bacteria (Biohazard Levels 2-3)

  1. Mycobacterium tuberculosis - Level 3

  2. Salmonella spp. - Level 2

  3. Escherichia coli - Level 2

  4. Staphylococcus aureus - Level 2

Fungi (Biohazard Levels 1-2)

  1. Aspergillus spp. - Level 2

  2. Candida albicans - Level 2

  3. Cryptococcus neoformans - Level 2

Parasites (Biohazard Level 2)

  1. Plasmodium spp. - Level 2

  2. Giardia lamblia - Level 2

  3. Toxoplasma gondii - Level 2

Biotoxins (Biohazard Levels 1-3)

  1. Botulinum toxin - Level 3

  2. Ricin - Level 3

  3. Mycotoxins - Level 2

Allergens (Biohazard Level 1)

  1. Pollens - Level 1

  2. Animal dander - Level 1

  3. Dust mites - Level 1

Genetically Modified Organisms (Biohazard Levels 1-3)

  1. GMOs producing pharmaceuticals or other active agents - Level depends on the agent produced; typically Level 1-3

Medical Waste (Biohazard Level 2)

  1. Contaminated sharps (needles, scalpels) - Level 2

  2. Used bandages, gloves, & other protective gear contaminated with infectious agents - Level 2

The list below incorporates the biohazard level assessments by the CDC, which are assigned based on the potential risk of infection and the severity of disease associated with each pathogen or hazardous material.


The levels range from 1 (lowest risk) to 4 (highest risk).

This list covers a broad spectrum of biohazards, ranging from microscopic organisms and infectious agents to environmental substances that can provoke allergic reactions or pose other health risks. Proper handling, containment, and disposal of these materials are essential to prevent the spread of disease and to protect health.

How does Choreology ensure the safe handling of biohazards?

Our teams are fully trained to manage all biohazard emergencies, ensuring safe and effective containment and resolution. We follow stringent safety protocols tailored to each type of biohazard to prevent the spread of disease and protect public health.

What measures are taken during a biohazard emergency?

During a biohazard emergency, Choreology implements a series of steps including the immediate containment of the biohazard, assessment of the risk, and then deal with the hazard safely, and ensure that we dispose of the pathogen properly to government and CDC standards. Our procedures are designed to quickly and effectively control and resolve the situation, minimizing health risks.

How does Choreology train its staff for biohazard management?

Choreology's staff undergo rigorous training programs that cover a wide range of topics, including the identification of biohazards, proper use of protective equipment, emergency response strategies, and methods for safe disposal. Continuous training ensures our team remains knowledgeable and prepared for any biohazard scenario.

Other Biohazard Services We Offer

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