High Relative Frequency of Enteroaggregative Escherichia coli Among Patients With Reportable Enteric Pathogens, Minnesota, 2016–2017

Author:

Beczkiewicz Aaron12ORCID,Cebelinski Elizabeth2,Decuir Marijke1,Lappi Victoria2,Wang Xiong2,Smith Kirk1,Boxrud Dave2,Medus Carlota1

Affiliation:

1. Foodborne, Waterborne, Vectorborne, and Zoonotic Diseases Section

2. Public Health Laboratory, Minnesota Department of Health, St. Paul

Abstract

AbstractBackgroundEnteroaggregative Escherichia coli (EAEC) is increasingly recognized as an enteric pathogen as clinical laboratories transition to culture-independent diagnostic tests that detect EAEC. To date, epidemiological studies have focused on children aged <5 years, and information on EAEC incidence, illness outcomes, and transmission avenues is limited.MethodsEnteric disease surveillance data in Minnesota were used to describe EAEC illnesses reported to the Minnesota Department of Health from September 2016 through August 2017. We determined laboratory characteristics of EAEC using pulsed-field gel electrophoresis and next-generation sequencing. Frequency of EAEC illness, demographic profile of cases, clinical characteristics of illness, and plausible food or environmental exposures leading to EAEC transmission were assessed.ResultsDuring the study period, 329 EAEC cases were reported. Among a subset of health systems able to detect EAEC over the entire study, EAEC was the second most common reportable enteric pathogen detected after Campylobacter and the most detected diarrheagenic E. coli pathotype. No other reportable enteric pathogens were detected among 75.3% of EAEC cases, and 68% of cases reported no international travel before onset. Several virulence genes were associated with clinical characteristics.ConclusionsWe provide evidence that EAEC is a likely causative agent of diarrheal illness in the United States. Our study contributes to criteria development for identification of pathogenic EAEC and proposes potential exposure avenues.

Funder

Centers for Disease Control and Prevention

Emerging Infections Program Foodborne Diseases Active Surveillance Network

Infectious Diseases Program

Publisher

Oxford University Press (OUP)

Subject

Infectious Diseases,Microbiology (medical)

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