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U.S. Department of Labor | |
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| Occupational Safety & Health Administration | ||||||
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How to use this Guidance |
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To help employers determine appropriate work practices and precautions, OSHA has divided workplaces and work operations into three risk zones, according to the likelihood of contamination with anthrax spores and employee exposure to them. These zones are called the green zone, the yellow zone, and the red zone. Green Zone: workplaces where contamination with anthrax spores is unlikely Yellow Zone: workplaces where contamination with anthrax spores is possible. Red Zone: workplaces where public health or law enforcement authorities have stated that contamination with anthrax spores has been confirmed or is strongly suspected. We show these zones within the shape of a pyramid to represent how the risk appears to be distributed. Based on information currently available, contamination with anthrax spores and exposure to the bacterium are unlikely in the vast majority of American workplaces, represented by the green zone. Employers should consider the factors listed above and use their knowledge of their own workplace, together with current information about the anthrax threat from law enforcement organizations and public health departments, to determine the zone that best describes their workplaces. After you make that determination, click on that zone on the pyramid below to see OSHA's recommendations for work practices and precautions that may reduce the risk of and worker concern about anthrax exposure in your workplace. For each zone, we point to sources of additional online information to help you understand and implement these protective measures. |
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 Anthrax Matrix Introduction |
Anthrax Matrix Pyramid  |
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