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Diagnosis of bacterial enteric infections in children in Zambia
T Nakano1, H Kamiya, N Matsubayashi
1Department of Pediatrics, Mie National Hospital, Japan.
Insights
Escherichia coli, Shigella, and Vibrio cholerae were the primary bacterial causes of diarrhea in young Zambian children. Effective diagnostic methods are crucial for managing these infections in resource-limited settings.
Area of Science:
- Microbiology
- Pediatrics
- Infectious Diseases
Background:
- Diarrheal diseases pose a significant health threat to children under five in Zambia.
- Identifying common bacterial pathogens is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To identify the main bacterial pathogens causing diarrhea in young children in Zambia.
- To recommend effective diagnostic methods for resource-limited laboratories.
Main Methods:
- Stool samples were collected from 639 children under five at the Diarrhoea Training Unit in Lusaka, Zambia (May 1992-May 1993).
- Standard culture media were used to evaluate samples for bacterial infections.
- Prevalence data were compared with other developing countries.
Main Results:
- Pathogenic Escherichia coli (E. coli) was found in 14.9% of children, Shigella species in 10.2%, and Vibrio cholerae in 3.3%.
- Visible blood in feces was an indicator of shigellosis.
- E. coli, Shigella, and V. cholerae were identified as major bacterial culprits.
Conclusions:
- E. coli, Shigella, and V. cholerae are the predominant bacterial causes of diarrhea in Zambian children.
- Further research is needed to ascertain the prevalence of specific enteropathogenic strains.
- Adequate diagnostic procedures are essential for appropriate patient management, with recommendations provided for resource-limited labs.
Background:
The bacterial pathogens commonly responsible for diarrhea in children under the age of 5 in Zambia were identified and the most effective methods of diagnosis of such infections in laboratories with limited resources, such as those in developing countries, are recommended.
Methods:
Stool samples were collected from children under the age of 5 years who visited the Diarrhoea Training Unit (DTU) of Zambia University Teaching Hospital in Lusaka, Zambia, between May 1992 and May 1993. A total of 639 children were evaluated for the presence of bacterial infection using standard culture media. The prevalence of bacterial pathogens was compared with that reported from other developing countries.
Results:
Pathogenic strains of Escherichia coli were isolated from 95 (14.9%) children, Shigella species from 65 (10.2%) children, and Vibrio cholerae from 21 (3.3%) children. The presence of visible blood in the feces was an early indicator of the presence of shigellosis.
Conclusions:
E. coli, Shigella species and Vibrio cholerae were the major causes of bacterial diarrhea in the Zambian children studied. Research is required to determine the prevalence of such enteropathogenic strains. The use of adequate diagnostic procedures is indispensable to appropriate management. The recommendations have been prepared as a manual for the identification of enteropathogenic bacteria to be used in laboratories with limited resources, such as in developing countries.