Anthrax spores may survive almost indefintly in uncultivated soils with a pH greater that 6.0 and ambient temperature above 15.5 degrees Celsius. Anthrax spores seem to be the most common route for infection of animals, but human anthrax is most commonly spread through contaminated meat, bone meal, hides, and animal feeds. Bacilli or spores may be the agent of infection.
There is a great deal of information in a section of the Pediatric Desk Reference that is too large to post here.
Thanks and a Bump. . .