Pathogenic ecology: Where have all the pathogens gone? Anthrax: a classic case

Pathogenic ecology is the natural relationship to animate and inanimate components of the environment that support the sustainment of a pathogen in the environment or prohibit its sustainment, or their interactions with an introduced pathogen that allow for the establishment of disease in a new environment. The anthrax bacterium in the spore form has been recognized as a highly likely biological warfare or terrorist agent. The purpose of this work was to determine the environmental reservoir of Bacillus anthracis between outbreaks of anthrax and to examine the potential factors influencing the conversion of the Bacillus anthracis from a quiescent state to the disease causing state. Here we provide environmental and laboratory data for the cycling of Bacillus anthracis in plants to reconcile observations that contradict the soil borne hypothesis of anthrax maintenance in the environment.

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