what is the causal agent of anthrax
View full size image. Anthrax is an infectious disease caused by the bacterium Bacillus anthracis. The bacteria live in soil and usually infect wild and domestic animals, such as goats, cattle and sheep.Anthrax outbreaks are fairly common worldwide and mostly affect agricultural workers.iew full size image. Anthrax is an infectious disease caused by the bacterium Bacillus anthracis. The bacteria live in soil and usually infect wild and domestic animals, such as goats, cattle and sheep. Anthrax outbreaks are fairly common worldwide and mostly affect agricultural workers.