Dispersal of biological agents is a real and psychological terrorist threat. Which of the following organisms has the potential to cause the greatest harm?
a. Anthrax
b. Ricin
c. Salmonella
d. Hantavirus
A
Category A organisms are considered the greatest threat because they can be transmitted easily from person to person and can cause high mortality with a potential for major public health impact. Of the organisms listed here, only anthrax (Bacillus anthracis) is considered a Category A organism. Category B organisms are moderately easy to disseminate and cause moderate morbidity and low mortality. They are considered high-risk organisms. Ricin toxin and Salmonella are classified as Category B. Hantavirus is considered a Category C organism or a pathogen that could be engineered for mass dissemination.
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