What are the common symptoms of a salmonella infection, and how soon after exposure do they typically appear?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Salmonella infection (salmonellosis) typically causes three main symptoms: diarrhea, fever, and stomach cramps. These symptoms usually begin 6 hours to 6 days after exposure to the bacteria and often last 4 to 7 days. Most people recover without treatment, but severe cases can lead to dehydration and may require medical care.

Because Salmonella symptoms overlap with many other gastrointestinal conditions—like norovirus, food poisoning from other bacteria, or even IBS flare-ups—it's difficult to know exactly what's causing your discomfort without a proper evaluation. Getting clarity early can help you decide whether to rest at home, hydrate, or seek urgent care. Take a free, instant, online symptom check to better understand your symptoms and confidently plan your next steps.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn if salmonella symptoms need care today Discover likely causes of your salmonella symptoms See if salmonella symptoms need urgent care Find OTC relief for salmonella symptoms Find a doctor for salmonella treatment Discover home remedies for salmonella recovery Understand if it could be salmonella now

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Explanation

Salmonella infections typically cause symptoms such as diarrhea, fever, and stomach cramps. These symptoms usually start 6 hours to 6 days after someone eats food or drinks water contaminated with Salmonella bacteria.

Common Symptoms:

Diarrhea: Often watery and can be severe.
Fever: A rise in body temperature is common.
Stomach Cramps: Pain in the stomach area.

Timing:

Symptoms usually begin 6 hours to 6 days after eating or drinking something with the bacteria.

Important Note:

Most people recover without treatment in 4 to 7 days. However, some cases can be more serious, especially in young children, older adults, and people with weakened immune systems. If you're experiencing these symptoms and want to understand what might be causing them, try our free AI symptom checker to help determine if you should seek medical attention.

(References)

Iushchuk ND, Brodov LE, Chekalina KI, Golokhvastova EL, Voronin VIu, Maleev VV, et al. (1990). [Clinical characteristics of the outbreak of Salmonella infection .... Klinicheskaia meditsina, 2084343.
Goldberg MB, & Rubin RH. (1988). The spectrum of Salmonella infection. Infectious disease clinics of North America, 3074116.
Nelson SJ, & Granoff D. (1982). Salmonella gastroenteritis in the first three months of life. A .... Clinical pediatrics, 7140121.

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