Biohazard – Biological hazard

Biohazard symbol t-shirt
Biohazard symbol t-shirt at The Tipsy Red Fox.

The Biohazard symbol for print on clothes, phone covers, wall art, and home decor. Warning for the zombie apocalypse.

A biological hazard, or biohazard, is a biological substance that poses a threat to the health of living organisms, primarily humans. This could include a sample of a microorganism, virus or toxin that can affect human health. A biohazard could also be a substance harmful to other animals.

Biohazard symbol

The symbol was developed in 1966 by Charles Baldwin. He was an environmental-health engineer working for the Dow Chemical Company on the containment products.

Levels of biohazard

The United States Centers for Disease Control and Prevention (CDC) classifies various diseases in levels of biohazard. Level 1 being minimum risk and Level 4 is an extreme risk. Laboratories and other facilities are categorized as BSL (Biosafety Level) 1–4 or as P1 through P4 for short (Pathogen or Protection Level).

  • Biohazard Level 1: This level including Bacillus subtilis, canine hepatitis, Escherichia coli, and varicella (chickenpox), as well as some cell cultures and non-infectious bacteria. At this level precautions against the biohazardous materials in question are minimal, most likely involving gloves and some sort of facial protection.
  • Biohazard Level 2: Viruses and bacteria that cause only moderate disease to humans, or are difficult to contract via aerosol in a lab setting, such as hepatitis A, B, and C, some influenza A strains, Lyme disease, salmonella, mumps, measles, scrapie, dengue fever, and HIV.
  • Biohazard Level 3: Bacteria and viruses that may cause severe to fatal disease in humans, but for which vaccines or other treatments exist, such as anthrax, West Nile virus, Venezuelan equine encephalitis, SARS virus, MERS coronavirus, hantaviruses, tuberculosis, typhus, Rift Valley fever, Rocky Mountain spotted fever, yellow fever, and malaria.
  • Biohazard Level 4: Viruses that cause severe to fatal disease in humans, and for which vaccines or other treatments are not available, such as Bolivian hemorrhagic fever, Marburg virus, Ebola virus, Lassa fever virus, Crimean–Congo hemorrhagic fever, and other hemorrhagic diseases. Currently, there are no bacteria classified at this level.
  • Biohazard Level 5: Viruses, bacteria or chemicals that cause fatal disease in humans, and for which no vaccines or other treatments are available, such as the apocalypse virus. The apocalypse virus scientistic name is H19N12, but it is known as the Doomsday virus or the Zombie virus. Currently, there is no way to cure an infected person.

Biohazard Symbol T-Shirt FAQ

Biohazard symbol on military green t-shirt.
Biohazard symbol on military green t-shirt. Buy this at TeePublic.

What Material Is This Item Made Of?

100% combed ringspun cotton. The perfect fabric for a graphic tee and the softest in the business. Due to product availability, the cotton type may vary for 2XL and 3XL sizes.

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