4 min read
Salmonella food poisoning - symptoms, treatment... is salmonella contagious?
Kacper Nowak
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Diets Premium Expert • 23.03.2026
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Scientifically reviewed by a clinical dietitian:
This article has been peer-reviewed for adherence to IŻŻ, WHO, and PTGiP clinical nutritional standards.
| Diets Premium Expert Kacper Nowak | min read 4 min | Scientifically reviewed by a clinical dietitian 23.03.2026 |
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Key Takeaways
Gastrointestinal disorders caused by food poisoning pose a serious threat to health as they are most commonly caused by the activity of microorganisms that enter the body through contaminated food products. The spring and summer season favor this phenomenon as there is an increased number of reported cases of infection during this time. Salmonella, also known as salmonella rod, is particularly dangerous due to its characteristic elongated shape. Symptoms of infection usually appear 6 to 72 hours after contact with the pathogen. Read on to learn more about treatment options and the risk of infection with salmonella.
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Salmonella Bacteria Infection
Salmonella bacteria are naturally present in the digestive systems of livestock and wild animals. They enter the external environment through feces, and their survival depends on factors such as temperature, humidity, and the presence of protein residues in feces. In favorable conditions, these microorganisms can persist in soil for several months and remain viable in foodstuffs even longer. The most common causes of salmonella infections include: consumption of food contaminated with feces from infected animals, such as poultry, mice, or rats, due to inadequate hygiene during production; consumption of animal-derived products, such as eggs from infected hens; contact with infected animals and humans excreting salmonella in feces; numerous scientific studies indicate that the most frequent cause of food poisoning is the ingestion of ready-made products, particularly confectionery, produced using raw eggs or contaminated milk products. Cases of infection through raw meat products, such as tartar, have also been reported.
Clinical presentations associated with salmonellosis
The clinical manifestations of salmonella infection can vary and are influenced by the quantity of bacteria that have entered the body, the quality of the infected individual's bacterial flora, and the efficiency of their immune system. In some cases, the illness may be mild and resolve within a few days, while in others, it progresses to severe inflammation. In extreme scenarios, sepsis or even death may occur. Commonly reported symptoms include fever, abdominal pain, intestinal cramps, diarrhea with mucus, the presence of granulocytes in stool analysis, and nausea or vomiting. Initial symptoms typically appear within 6 to 72 hours post-infection. Any uncertainties warrant immediate medical consultation for thorough diagnostic evaluation.
How to address a salmonella infection?
In certain instances, the infection may resolve spontaneously within a few days without the need for medication. In such cases, it is advised to adhere to a gentle diet with increased fluid intake. In cases of severe vomiting and diarrhea, the following measures are recommended: oral rehydration solutions with high electrolyte content; antimicrobial therapy; intravenous hydration solutions (in special cases). Advanced stages of infection require the application of appropriate antibiotic therapy, selected by the treating physician. Pharmacological treatment is typically based on the administration of drugs containing ampicillin, ciprofloxacin, or trimethoprim-sulfamethoxazole, which exhibit bactericidal effects.
Can salmonella be transmitted through infection?
Salmonellosis is an infectious disease caused by bacteria that can spread to humans through contact with infected individuals or contaminated food. Infection often occurs due to poor hygiene, inadequate sanitary conditions, or consumption of improperly stored or prepared food. To prevent salmonellosis, the following measures should be observed: thorough handwashing after touching raw eggs or meat; maintaining cleanliness in the kitchen, including dishes and countertops; washing hands after using the restroom; avoiding contact with animal feces; consuming only pasteurized milk; careful cleaning of kitchen utensils; separate storage of raw and ready-to-eat foods; refrigeration of food; avoiding multiple freezing; refraining from consuming raw foods from unreliable sources.
Kacper Nowak
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