- Clostridium botulinum is a rod-shaped, anaerobic bacterium found in soil that produces botulinum toxin. It forms spores which allow it to survive unfavorable conditions. - The toxin acts by blocking the release of acetylcholine at neuromuscular junctions, causing flaccid paralysis. There are 7 types of toxin (A-G) which cause different forms of botulism in humans and animals. - Botulism results from ingesting foods containing preformed toxin, with symptoms beginning 18-24 hours later such as visual disturbances, difficulty swallowing and speaking. Treatment involves antitoxin administration and supportive care.