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Updated: Aug 20, 2026

Epithelial Cell Infection Analyses with Shigella
Published on: February 9, 2024
[Antibiotic treatment of Shigella sonnei gastroenteritis]
Abstract:
THE INTEREST OF ANTIBIOTIC TREATMENT OF SHIGELLA INFECTIONS: to reduce the carriage and contamination, duration of the symptoms and the risk of complications.
The Evolution Of The Treatment:
Over the past years, strains of Shigella sonnei have become resistant to aminopenicillin and cotrimoxazole (treatment recommended till now) and now predominate. INTER-HUMAN TRANSMISSION: The Shigella reservoir is human. The bacteria are easily transmitted in fecal-oral mode. The populations most at risk are those in situations of great promiscuity.
Regarding Diagnosis:
Shigella sonnei infections are commonly characterised by intermediate diarrhoea and fever, following a short period of incubation. Only culture of the faeces permits the diagnosis.
The Decision To Treat:
Confronted with an isolated case, treatment can only be initiated after bacteriological diagnosis. Confronted with symptomatic cases with at least one confirmed bacteriologically, treatment can be initiated without waiting for the results of the faecal culture.
In Children:
Azithromycine has become the treatment of choice. Ceftriaxone, administered via the parenteral route, can hardly be considered as the first-line treatment. Quinolones can only be considered in last intention; only ciprofloxacine can be recommended.
In Adults:
Ciprofloxacine and ofloxacine can be recommended first-line over a period of 3 days.
Guidelines:
A summary, including good faecal culture practices, can be found on the Website of the French Agency for the saitary of health products (Afssaps) (www.afssaps.sante.fr).
Insights
Antibiotic treatment for Shigella infections is crucial for reducing symptoms and complications. Azithromycin is now the preferred treatment due to increasing resistance to older antibiotics.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Shigella sonnei infections are characterized by diarrhea and fever, with transmission occurring via the fecal-oral route.
- Increasing resistance to aminopenicillin and cotrimoxazole necessitates updated treatment guidelines.
- Human populations in close proximity are most at risk for Shigella transmission.
Purpose of the Study:
- To outline current antibiotic treatment strategies for Shigella infections.
- To address the evolving landscape of antibiotic resistance in Shigella sonnei.
- To provide guidance on the diagnosis and management of Shigella infections.
Main Methods:
- Review of current literature and clinical guidelines on Shigella treatment.
- Analysis of antibiotic resistance patterns for Shigella sonnei.
- Synthesis of diagnostic and therapeutic recommendations.
Main Results:
- Azithromycin is the recommended first-line treatment for Shigella infections.
- Ceftriaxone is not recommended as a first-line treatment.
- Quinolones, specifically ciprofloxacin and ofloxacin, are recommended for adults over a 3-day period and as a last resort in other cases.
Conclusions:
- Updated treatment protocols are essential due to emerging antibiotic resistance.
- Prompt diagnosis through fecal culture is critical for effective management.
- Guidelines for Shigella treatment are available from health authorities like Afssaps.
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