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Salmonella: Facts and Details

What is Salmonella?

Salmonella is a bacterium that causes diarrhea and other “stomach bug” symptoms. Salmonellosis is the infection the bacteria causes.

How common is salmonellosis?

Salmonellosis is a common cause of diarrhea. The CDC estimates about 1 million cases occur in the United States each year.

How do people become infected?

Salmonellosis is spread by eating undercooked meat, raw vegetables, sprouts, and fruits that have been grown or washed in contaminated water; swimming in or drinking sewage contaminated water; exposure to infected animals; and eating food prepared by people who have not washed their hands after using the toilet. People can get Salmonella from pet turtles, iguanas, lizards, snakes, ducklings, and chicks.

What are the signs and symptoms of salmonellosis?

Symptoms include diarrhea, fever, and stomach cramps. Dehydration (loss of fluids) can occur and may be severe in infected infants or elderly people.

How long can you spread Salmonella?

After exposure, symptoms appear in 12 to 72 hours and last about five to 10 days. Someone with salmonellosis is contagious as long as Salmonella is found in their feces (poop).

How is salmonellosis treated?

Salmonella infections do not usually require treatment other than oral fluids, unless the patient becomes severely dehydrated or the infection spreads from the gut. Antibiotic therapy can prolong the duration of Salmonella bacteria in the feces (poop) and is recommended only for patients with severe illness or those at risk of severe disease and complications.

Who is at risk for severe disease?

Anyone can become infected with Salmonella, but infants, people with weakened immune systems, and the elderly are most at risk for severe disease.

How can you prevent salmonellosis?

There is no vaccine for Salmonella. Prevent infection by the following methods: