Anthrax is an acute infectious disease caused by the spore-forming bacterium B.anthracis. It
occurs most frequently as a disease of herbivores (e.g., cattle, goats and sheep) that acquire
spores from direct contact with contaminated soil. Humans usually become infected
through contact with, or ingestion of, B.anthracis spores from infected animals or their
products. Human-to-human transmission has not been documented