Salmonella Infection: Symptoms & Signs

Medically Reviewed on 5/12/2021

Salmonella is an infectious illness. Poultry, beef, milk, and eggs may contain Salmonella bacteria, but thorough cooking of these foods destroys the bacteria.

Signs and symptoms of Salmonella food poisoning develop within 12-72 hours and last for 4-7 days. Symptoms and signs can include

The diarrhea of Salmonella has been described as loose and is usually not bloody.

Cause of Salmonella poisoning

Infection with Salmonella bacteria causes Salmonella poisoning. The bacteria are normally present in the intestinal tract of humans and animals and are excreted in feces. The food-borne illness occurs from consumption of raw meats and eggs containing the bacteria, contaminated dairy foods such as unpasteurized (raw) milk, or fruits and vegetables contaminated by food handlers.

Other salmonella infection symptoms and signs


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Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.