Is salmonella contagious from person to person, and if so, how does it spread?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Salmonella can spread from person to person, most often through contact with feces from an infected individual. This type of transmission is especially common in settings like hospitals, daycare centers, and nursing homes, where close contact and shared surfaces increase the risk. Proper handwashing and hygiene are key to preventing its spread.

If you're experiencing symptoms like diarrhea, stomach cramps, fever, or nausea, it's important to identify the cause early—especially since salmonella can mimic other illnesses. Taking a free, instant, online symptom check can help you better understand what's going on and guide your next steps, whether that means home care or seeing a doctor.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn if salmonella needs urgent care Discover what could be causing symptoms See whether salmonella is likely Find OTC options for salmonella symptoms Find a doctor for salmonella care Discover safe home remedies for salmonella Check if your symptoms are salmonella

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Explanation

Salmonella is a type of bacteria that can cause illness in humans. It is known to spread from person to person, primarily through the fecal-oral route. This means that if someone touches something contaminated with the feces of an infected person and then touches their mouth, they can become infected.

How It Spreads:

Direct Contact: This can happen in settings like hospitals where people are in close proximity to each other.
Poor Hygiene: Not washing hands properly after using the bathroom or before eating can lead to the spread.
Contaminated Surfaces: Touching surfaces or objects contaminated with Salmonella can also lead to infection.

In hospitals, outbreaks can occur if infection control practices are not followed. This includes proper handwashing and cleaning practices. While not as common as foodborne transmission, person-to-person spread can still happen, especially in crowded or unsanitary conditions. If you're experiencing symptoms that concern you, try Ubie's free AI-powered symptom checker to better understand what might be causing them. It's important to maintain good hygiene to prevent the spread of Salmonella.

(References)

Steere AC, Hall WJ 3rd, Wells JG, Craven PJ, Leotsakis N, Farmer JJ 3rd, & Gangarosa EJ. (1975). Person-to-person spread of Salmonella typhimurium after a .... Lancet (London, England), 46457.
Qamar FN, Hussain W, & Qureshi S. (2022). Salmonellosis Including Enteric Fever. Pediatric clinics of North America, 34794677.
Standaert SM, Hutcheson RH, & Schaffner W. (1994). Nosocomial transmission of Salmonella gastroenteritis to .... Infection control and hospital epidemiology, 8133005.

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