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The international symbol for biological hazard.

Biological hazards, also known as biohazards, refer to biological substances that pose a threat to the health of living organisms, primarily that of humans. This can include medical waste or samples of a microorganism, virus or toxin (from a biological source) that can affect human health. It can also include substances harmful to other animals.

The term and its associated symbol are generally used as a warning, so that those potentially exposed to the substances will know to take precautions. The biohazard symbol was developed in 1966 by Charles Baldwin, an environmental-health engineer working for the Dow Chemical Company on the containment products.<ref name=NYTMagSymbolMaking>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref name="waterloo">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

It is used in the labeling of biological materials that carry a significant health risk, including viral samples and used hypodermic needles.

In Unicode, the biohazard symbol is U+2623 ().


Biological hazard sections
Intro  Classification   Levels of biohazard   Symbol   See also   References  External links  

PREVIOUS: IntroNEXT: Classification
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Level::symbol    Virus::fever    Other::humans    Category::disease    Level::journal    Title::hazards

{{#invoke:redirect hatnote|redirect}}

The international symbol for biological hazard.

Biological hazards, also known as biohazards, refer to biological substances that pose a threat to the health of living organisms, primarily that of humans. This can include medical waste or samples of a microorganism, virus or toxin (from a biological source) that can affect human health. It can also include substances harmful to other animals.

The term and its associated symbol are generally used as a warning, so that those potentially exposed to the substances will know to take precautions. The biohazard symbol was developed in 1966 by Charles Baldwin, an environmental-health engineer working for the Dow Chemical Company on the containment products.<ref name=NYTMagSymbolMaking>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref name="waterloo">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

It is used in the labeling of biological materials that carry a significant health risk, including viral samples and used hypodermic needles.

In Unicode, the biohazard symbol is U+2623 ().


Biological hazard sections
Intro  Classification   Levels of biohazard   Symbol   See also   References  External links  

PREVIOUS: IntroNEXT: Classification
<<>>