# Infectious disease symbols...

**URL:** <https://boards.straightdope.com/t/infectious-disease-symbols/231881>\
**Category:** Factual Questions\
**Created:** [March 1, 2004, 7:53am UTC](https://boards.straightdope.com/t/infectious-disease-symbols/231881 "2004-03-01T07:53:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Souless\_slicer](https://avatars.discourse-cdn.com/v4/letter/s/b5a626/32.png) [@Souless\_slicer](https://boards.straightdope.com/u/Souless_slicer)\
**Post date:** [March 1, 2004, 7:53am UTC](https://boards.straightdope.com/t/infectious-disease-symbols/231881/1 "2004-03-01T07:53:31Z")

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What are the universal disease symbols, or symbols for cantagious or infectious diseases?

thanks for all help.

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**Author:** ![RayMan](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@RayMan](https://boards.straightdope.com/u/RayMan)\
**Post date:** [March 1, 2004, 7:59am UTC](https://boards.straightdope.com/t/infectious-disease-symbols/231881/2 "2004-03-01T07:59:13Z")

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I used to work in a hospital. There were tons of these **biohazard symbols** all around.

[http://www.udel.edu/OHS/biosafety/bbpslides/sld025.htm](http://www.udel.edu/OHS/biosafety/bbpslides/sld025.htm)