Biological contamination | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-27

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Biological_hazard


00:01:09 1 Classification
00:02:35 2 Levels of biohazard
00:06:27 3 Symbol
00:08:52 4 See also



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SUMMARY
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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 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.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 (☣).