ABSTRACT
There are seven types of Clostridium botulinum, designated types A through G, each producing an immunologically distinct protein neurotoxin. Human botulism is associated with types A, B, E, and F. Types C and D cause botulism in animals. Type G was isolated from soil in Argentina (Gimenez and Ciccarelli, 1970), and from autopsy samples obtained from humans whose cause of death was not known (Sonnabend et al., 1981), but has not yet been associated with botulism in any species.
