It is one of the more common causes of diarrhea. Most cases of salmonellosis occur in the summer months and may occur as a single case, clusters or outbreaks. Any person can get salmonellosis, but it is recognized more often in infants and children. Salmonella bacteria are spread by eating or drinking contaminated food or water or by contact with infected people or animals. People with salmonellosis may get mild or severe diarrhea, fever and occasionally vomiting.
Bloodstream infections can be quite serious, particularly in the very young or elderly.
The symptoms usually appear one to three days after exposure, but may take up to seven days. Salmonella bacteria are found in the feces of many kinds of animals. Chicken, turkey, beef, pork, and other meats can be contaminated when the animals are slaughtered. Eggs may be contaminated even while inside the hen. Raw unpasteurized milk may contain Salmonella bacteria.