Gram-positive bacilli are divided into sporing and non-sporing.
The sporing are subdivided between those that are aerobic
(Bacillus: see Chapter 16) and those that are anaerobic
(Clostridium: see Chapter 18). Pathogens include Bacillus
anthracis which causes anthrax, and clostridia which cause gas
gangrene, tetanus, pseudomembranous colitis and botulism.
Non-sporing pathogens include Listeria and corynebacteria
(see Chapter 16).