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Updated: Aug 22, 2026

Epithelial Cell Infection Analyses with Shigella
Published on: February 9, 2024
Epidemiology of Shigella-associated diarrhea in rural Egyptian children
Remon R Abu-Elyazeed1, Thomas F Wierzba, Robert W Frenck
1U.S. Naval Medical Research Unit No. 3, Cairo, Egypt.
Insights
Shigella diarrhea affects young Egyptian children, with incidence at 0.2 episodes/child-year. Breastfeeding offers protection, while younger age and warmer months increase risk, highlighting the need for control measures.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- Shigella diarrhea is a significant pediatric health concern in developing regions.
- Understanding the epidemiology of Shigella infections is crucial for implementing effective control strategies.
Purpose of the Study:
- To investigate the incidence and risk factors of Shigella-associated diarrhea in young children in Egypt's Nile Delta.
- To identify common symptoms and outcomes of Shigella infections in this population.
Main Methods:
- Prospective cohort study conducted from February 1995 to February 1998.
- Bi-weekly home visits to children under three years of age in the Nile Delta.
- Stool sample collection and analysis for Shigella identification.
Main Results:
- The incidence of Shigella-associated diarrhea was 0.2 episodes per child-year.
- Shigella flexneri was the predominant serogroup (55%).
- Younger age and warm months were identified as risk factors; breastfeeding demonstrated a protective effect.
Conclusions:
- Shigella-associated diarrhea remains prevalent in young Egyptian children.
- Findings underscore the necessity for enhanced control measures, including the development of a Shigella vaccine.
Abstract:
During the period from February 1995 to February 1998, the epidemiology of Shigella diarrhea was studied among children less than three years of age residing in Egypt's Nile Delta. Children were visited twice a week and a stool sample was collected from any of them with diarrhea. The incidence of Shigella-associated diarrhea was 0.2 episodes/child-year, with S. flexneri being the most common serogroup isolated (55% of Shigella episodes). Younger age and the warm months increased the risk of developing Shigella-associated diarrhea, while breastfeeding was protective. Children with Shigella were ill for a mean of four days and passed a mean of six stools per day. Common symptoms included fever (35%), vomiting (19%), and dehydration (16%). Dysentery, however, was unusual, occurring in only 11% of the cases. In conclusion, Shigella-associated diarrhea remains relatively common in Egyptian children and supports the need for additional control measures including vaccine development.
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