Abstract
Background
Knowledge about the distribution of Escherichia Coli (E. coli) pathotypes in Iran is limited. This nation-wide survey aims to provide a comprehensive description of the distribution of five pathogenic E. coli in Iran.
Methods
Stool samples were collected from 1,306 acute diarrhea cases from 15 provinces (2013–2014). E. coli-positive cultures underwent PCR testing for the detection of STEC, ETEC, EPEC, EAEC, and EIEC pathotypes. Pathotype frequency by province, age-group, and season was estimated.
Results
979 diarrhea samples (75.0%) were culture-positive for E. coli (95% CI: 72.6, 77.3%), and 659 (50.5%) were pathogenic E. coli (95% CI: 47.8, 53.2%). STEC was the most frequent pathotype (35.4%). ETEC (14.0%) and EPEC (13.1%) were the second and the third most frequent pathotypes, respectively. EAEC (4.3%) and EIEC (0.3%) were not highly prevalent. Fars (88.7%) and Khorasan-e-Razavi (34.8%) provinces had the highest and lowest frequencies, respectively. E. coli pathotypes were more frequent in warmer than cooler seasons, showed the highest frequency among children under five years of age (73%), and had no significant association with participants’ gender.
Conclusions
Diarrheagenic E. coli may be an important cause of acute diarrhea in adults and children in Iran. STEC and ETEC seem to be widespread in the country with a peak in warmer seasons, impacting the recommended use of seasonal STEC and ETEC vaccines, especially in high-risk groups. Monitoring the incidence of E. coli pathotypes, serotypes, and antibiotic resistance over time is highly recommended for evaluation of interventions.
Publisher
Public Library of Science (PLoS)
Reference52 articles.
1. Pathogenic Escherichia coli;J Kaper;Nature reviews Microbiology,2004
2. Prevalence of diarrheagenic Escherichia coli in Finns with or without diarrhea during a round-the-world trip;M Keskimäki;Journal of clinical microbiology,2000
3. Escherichia coli: a brief review of diarrheagenic pathotypes and their role in diarrheal diseases in Iran;A Jafari;Iranian journal of microbiology,2012
4. Diarrhoeagenic E. coli pathotypes in children with and without diarrhoea in an Iranian referral paediatrics centre
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