Where does salmonella bacteria typically originate and how does it spread?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Salmonella is a type of bacteria commonly found on fresh fruits, vegetables, raw meat, poultry, and eggs. It spreads through contaminated food or water and can cause an infection called salmonellosis, which typically leads to symptoms like diarrhea, fever, stomach cramps, and nausea.

If you're experiencing symptoms that concern you, understanding what's going on is the first step toward feeling better. Salmonella infections can range from mild to serious, and early awareness helps you decide whether home care or medical attention is needed. Take a free, instant, online symptom check to get personalized insights and clear guidance on your next steps.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Discover if your symptoms suggest salmonella Find out what’s causing these symptoms See whether this could be salmonella Find OTC relief for salmonella symptoms Find a doctor for salmonella care Discover medically valid home remedies Learn if you need a symptom check

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Explanation

Salmonella bacteria are commonly found in fresh fruits and vegetables. These bacteria can spread to people when they eat food or drink water that has been contaminated.

Where Do They Come From?

Salmonella can be present in the environment, including soil and water, where fruits and vegetables are grown.
Contamination can happen during different stages, such as harvesting, processing, or even at home.

How Do They Spread?

Eating raw or undercooked foods that have Salmonella can make people sick.
Sometimes, fruits and vegetables can become contaminated if they come in contact with animal feces or dirty water.

It is important to wash fruits and vegetables thoroughly and cook food properly to reduce the risk of getting sick from Salmonella. If you're experiencing symptoms like nausea, diarrhea, or stomach cramps, use this free symptom checker to help understand what might be causing your discomfort.

(References)

Hanning IB, Nutt JD, & Ricke SC. (2009). Salmonellosis outbreaks in the United States due to fresh .... Foodborne pathogens and disease, 19580447.
Kowalska B. (2023). Fresh vegetables and fruit as a source of Salmonella bacteria. Annals of agricultural and environmental medicine : AAEM, 36999850.
Berger CN, Sodha SV, Shaw RK, Griffin PM, Pink D, Hand P, & Frankel G. (2010). Fresh fruit and vegetables as vehicles for the transmission .... Environmental microbiology, 20636374.

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