There is a large variety of Salmonellae organisms that can cause the food infection Salmonellosis.
These bacteria grow inside the host and produce a toxin which causes illness by irritating the intestinal walls. One million or more organisms must be ingested in order to cause illness.
Most cases of salmonellosis are a result of contact of prepared foods with raw meet or its juices. Eating raw or rare meat is also a danger. Other cases result from insufficiently cooked poultry, eggs, and dairy products especially when kept unrefrigerated for longer periods of time.
Salmonellae bacteria can be prevented by cleanliness and sanitation of food handlers and equipment, pasteurization, and refrigeration.