Can you tell me how anthrax attack and spread?

See below. Anthrax is a bacterial infection. The germs form spores and be present in soil or animal hides for years. Natural spread is through inhalation of spores with resulting pneumonia and high mortality. Skin infection occurs through abrasion in the skin. Eating undercooked meat of infected animals causes Castro-intestinal infection. See this site for more info. http://www.cdc.gov/anthrax/