The actions that will constitute an
appropriate response for an anthrax threat will depend on how the
threat was discovered and the credibility of a threat at your
facility (for example, which zone your facility fits into on the Anthrax
Risk Reduction Matrix).
of Possible Contamination or Threat
of anthrax may occur in several ways:
The following links provide additional information about identifying
- Physical evidence (such as a suspicious package
- Epidemiological or medical observations (such as
individual cases of anthrax), or
- Unsubstantiated threat (such as a phone call or letter
stating that anthrax has been used).
Information About How To Recognize and Handle a Suspicious
Package or Envelope [95 KB PDF, 2 pages]. Centers for Disease Control and Prevention (CDC) Health
Advisory, CDCHAN-00050-01-10-31-ADV-N, (2001, October 31).
- Protect Your Workplace: Learn All About Suspicious Packages. Federal Bureau of Investigation (FBI), (2006, September 20). Describes the new poster developed through the joint efforts of four federal agencies—the US Department of Homeland Security (DHS); the US Postal Service and its Postal Inspection Service; the Bureau of Alcohol, Tobacco, Firearms and Explosives; and the FBI.
- Mail Security Center. United States Postal Service.
- Video: Protecting Your Health for People Who Process,
Sort, and Deliver the Mail. Centers for Disease Control and Prevention (CDC), Public Health Foundation, Bioterrorism/Emergency
the Credibility of the Threat
first step to take for a potential anthrax threat is to evaluate
the credibility of the threat. This is done by evaluating
where your facility fits on the
Anthrax Risk Reduction Matrix. The actions you should take
if you have an anthrax threat at your worksite will depend on
What Actions You Should Take
you have determined which zone your facility fits into on the Anthrax
Risk Reduction Matrix, the following table will help you
determine what actions to take if you have an anthrax threat at your
Select the color zone title (green, yellow,
red) to see corresponding response actions. (Text Version.)
of the Anthrax Threat
A credible anthrax threat is unlikely at your facility.
A credible anthrax threat is
possible at your facility.
Anthrax is strongly suspected or
has been confirmed at your facility. The appropriate
authorities should already be involved in the the anthrax
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