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Enteropathogenic Escherichia coli serotypes and endemic diarrhea in infants
Insights
Certain enteropathogenic Escherichia coli (E. coli) serotypes were identified as key causes of diarrhea in infants under six months old. These specific E. coli strains were more prevalent in infants with diarrhea than other common bacterial pathogens.
Area of Science:
- Microbiology
- Pediatrics
- Infectious Diseases
Background:
- Endemic diarrhea poses a significant health challenge in infants.
- Identifying specific etiological agents is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To investigate the role of enteropathogenic Escherichia coli (E. coli) serotypes in endemic infantile diarrhea.
- To compare the prevalence of specific E. coli serotypes with other enteric pathogens in young children.
Main Methods:
- Fecal samples were collected from 550 children with endemic diarrhea and 129 controls in São Paulo.
- Samples were analyzed for the presence of various enteropathogenic E. coli serotypes.
- Prevalence was compared with other common enteric pathogens like Salmonella, Shigella, and Yersinia.
Main Results:
- Enteropathogenic E. coli serotypes O111ab:H(-), O111ab:H(2), and O119:H6 were significantly associated with diarrhea in children aged 0-5 months.
- These specific E. coli serotypes were the most frequent agents of diarrhea in this age group.
- Their prevalence exceeded that of enterotoxigenic/enteroinvasive E. coli, Salmonella, Shigella, and Yersinia enterocolitica.
Conclusions:
- Enteropathogenic E. coli serotypes are significant etiological agents of endemic infantile diarrhea.
- Specific serotypes are particularly implicated in diarrhea among infants aged 0-5 months.
- Public health interventions should consider these E. coli strains as primary targets.
Abstract:
Enteropathogenic Escherichia coli serotypes were searched for in feces of 550 children with endemic diarrhea and in 129 controls, in São Paulo, in 1978 and 1979; serotypes O111ab:H(-), O111ab:H(2), and O119:H6 were significantly associated with diarrhea in children 0 to 5 months old and were the most frequent agents of diarrhea in this age group as compared with enterotoxigenic and enteroinvasive E. coli, Salmonella sp., Shigella sp., and Yersinia enterocolitica. It is concluded that various enteropathogenic E. coli serotypes may be agents of endemic infantile diarrhea.