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Updated: Sep 20, 2026

Chronic Salmonella Infected Mouse Model
Published on: May 31, 2010
[Clinical importance of infective agent persistence in Salmonella infection in children]
S Z Fel'dman1, Iu D Kagan, B Ia Usviatsov
1Institute of Cellular and Intracellular Symbiosis, Medical Academy, Municipal Clinical Infectious Hospital, Orenburg, Russia.
Abstract:
The persistence properties of 70 S. enteriditis cultures and 12 S. typhimurium cultures isolated from the feces of children of the earliest age groups with the gastrointestinal form of Salmonellosis infection were studied. The study revealed that the low level of persistence properties occurred in most cases of mild forms of the disease. Salmonellae with a high level of anticomplement and antilysozyme activity were more often isolated in cases of moderate and severe forms of salmonellosis. The presence of correlation between the expression of the factors under study and the severity of the symptoms of intoxication in combination with the duration of the diarrhea syndrome in moderate and severe forms of Salmonella infection in children of the earliest age groups was established. The suggestion was made that the evaluation of the persistence properties of bacteria may be used for the prognosis of the course of the infectious process.
Insights
Salmonella persistence properties correlate with disease severity in young children. Evaluating these bacterial traits may help predict the course of Salmonellosis infection.
Area of Science:
- Microbiology
- Infectious Diseases
- Pediatrics
Background:
- Salmonellosis is a common gastrointestinal infection in infants.
- Bacterial persistence factors are crucial in determining infection outcomes.
- Understanding these factors can aid in predicting disease progression.
Purpose of the Study:
- To investigate the relationship between Salmonella persistence properties and the clinical presentation of Salmonellosis in young children.
- To determine if bacterial factors can predict disease severity and duration.
Main Methods:
- Analysis of 70 Salmonella enteriditis and 12 Salmonella typhimurium cultures from pediatric patients.
- Assessment of bacterial anticomplement and antilysozyme activity.
- Correlation of bacterial properties with clinical symptoms like intoxication and diarrhea.
Main Results:
- Low persistence properties were associated with mild Salmonellosis cases.
- High anticomplement and antilysozyme activity were more prevalent in moderate to severe cases.
- A correlation was found between bacterial factors, intoxication severity, and diarrhea duration in severe infections.
Conclusions:
- Bacterial persistence properties are linked to Salmonellosis severity in young children.
- Assessing these properties could serve as a prognostic tool for infectious disease course.
- Further research into these factors may improve clinical management of pediatric Salmonellosis.
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