Between 1976 and 2001, the only cases of inhalational anthrax in the united states have occurred as a result of intentional release of anthraces into the environment.
Between 1976 and 2001, there were no cases of inhalational anthrax in the United States until a 2001 attack.
This attack which came to be known as Amerithrax was the result of the intentional release of anthraces into the environment.
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