the bacterium Salmonella typhimurium, a flagellate, Gram-negative bacillus. S. typhimurium is a major cause of food poisoning (salmonellosis) in humans. Salmonella bacteria are transmitted in food

These Gram-negative rod-shaped bacteria have a single polar flagellum.They are the cause of cholera, an infection of the small intestine that is transmitted to humans via contaminated food or water