[Distribution and antibiotic resistance of pathogens isolated from children with infectious diarrhea in Guangzhou]
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Updated: Jun 25, 2026

A High-throughput Platform for the Screening of Salmonella spp./Shigella spp.
Published on: November 7, 2018
Yong-Qiang Xie1, Qiu-Lian Deng, Yan Guo
1Guangzhou Children's HospitalìGuangzhou 510120, China.
Insights
Shigella, enteropathogenic Escherichia coli, and Salmonella are key causes of infectious diarrhea in Guangzhou children. These pathogens remain susceptible to imipenem and third-generation cephalosporins, but show high resistance to ampicillin.
Area of Science:
- Pediatric infectious diseases
- Microbiology
- Antimicrobial resistance
Context:
- Infectious diarrhea is a significant health concern in pediatric populations.
- Understanding the etiological agents and their resistance patterns is crucial for effective treatment.
- Guangzhou, China, presents a specific epidemiological context for pediatric infectious diarrhea.
Purpose:
- To determine the prevalence and antibiotic susceptibility profiles of bacterial pathogens causing infectious diarrhea in children in Guangzhou.
- To identify the primary causative agents of infectious diarrhea in this demographic.
- To assess resistance trends against commonly used antibiotics.
Summary:
- A study of 2,409 children with infectious diarrhea in Guangzhou identified 448 pathogenic bacterial isolates.
- Shigella, enteropathogenic E. coli, and Salmonella were the predominant pathogens.
- While susceptible to imipenem and third-generation cephalosporins, isolates exhibited high resistance to ampicillin and sulfamethoxazole/trimethoprim.
Impact:
- Provides essential data for guiding empirical antibiotic therapy for pediatric infectious diarrhea in Guangzhou.
- Highlights the need for antimicrobial stewardship to combat rising resistance to certain drugs.
- Informs public health strategies for controlling infectious diarrhea outbreaks in children.
Objective:
To study the distribution and antibiotic resistance of the isolated pathogens from children with infectious diarrhea in Guangzhou.
Methods:
The fecal samples of 2 409 children with infectious diarrhea between January 2006 and December 2007 were collected and cultured. Pathogenic bacterium were isolated and identified by biochemical and serological methods. The antibiotic susceptibilities were tested by the Kirby-Bauer method.
Results:
A total of 448 isolates of pathogenic bacterium (18.6%) were obtained, including Shigella (n=159), enteropathogenic Escherichia coli (n=141), Salmonella (n=76), Vibrion (n=11), fungus (n=41), and C jejuni (n=20). All of isolates of the three major pathogenic bacterium, Shigella, enteropathogenic Escherichia coli and Salmonella, were susceptible to imipenem and less than 10% of the isolates were resistant to the third generation cephalosporins and beta-lactamase inhibitors. However, the isolates showed a high resistance to ampicillin and sulfamethoxazole/trimethoprim (>75%).
Conclusions:
Shigella, enteropathogenic Escherichia coli and Salmonella were major pathogenic bacterium of diarrhea in children from Guangzhou. The major isolates were susceptible to imipenem, the third generation cephalosporins and beta -lactamase inhibitors, but were resistant to ampicillin and sulfamethoxazole/trimethoprim.
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