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• W4290375595 abstract "Background & Aims There is debate whether atypical enteropathogenic Escherichia coli (aEPEC) causes disease in adults. aEPEC is commonly detected in symptomatic and asymptomatic individuals. aEPEC, in contrast to typical EPEC, lacks bundle-forming pili, altering its pathogenicity. Here, we define for the first time the clinical manifestations of sporadic aEPEC infection in United States children and adults and determine whether EPEC load correlates with disease. Methods This is a retrospective case-control study of 380 inpatients/outpatients of all ages. EPEC load in stools was determined by quantitative polymerase chain reaction. Results Diarrhea, vomiting, abdominal pain, and fever were more prevalent in EPEC-positive cases than in EPEC-negative controls. aEPEC infection caused mostly acute, mild diarrhea lasting for 6 to 13 days. However, some had severe diarrhea with 10 to 40 bowel movements per day or had persistent/chronic diarrhea. Fever, vomiting, and abnormal serum sodium levels were more common in children. Adults more often reported abdominal pain and longer duration of diarrhea. Symptomatic aEPEC infection was associated with leukocytosis in 24% of patients. EPEC load >0.1% was associated with symptomatic infection; however, loads varied greatly. Co-infecting pathogens did not alter diarrhea severity or EPEC load. Longitudinal data reveal that some are colonized for months to years or are repeatedly infected. Conclusions aEPEC is associated with a wide array of symptoms in adults, ranging from asymptomatic carriage to severe diarrhea. Higher EPEC loads are associated with presence of symptoms, but bacterial load does not predict disease or severity. Future studies are needed to understand bacterial and host factors that contribute to aEPEC pathogenicity to improve diagnostic tools and clinical care. There is debate whether atypical enteropathogenic Escherichia coli (aEPEC) causes disease in adults. aEPEC is commonly detected in symptomatic and asymptomatic individuals. aEPEC, in contrast to typical EPEC, lacks bundle-forming pili, altering its pathogenicity. Here, we define for the first time the clinical manifestations of sporadic aEPEC infection in United States children and adults and determine whether EPEC load correlates with disease. This is a retrospective case-control study of 380 inpatients/outpatients of all ages. EPEC load in stools was determined by quantitative polymerase chain reaction. Diarrhea, vomiting, abdominal pain, and fever were more prevalent in EPEC-positive cases than in EPEC-negative controls. aEPEC infection caused mostly acute, mild diarrhea lasting for 6 to 13 days. However, some had severe diarrhea with 10 to 40 bowel movements per day or had persistent/chronic diarrhea. Fever, vomiting, and abnormal serum sodium levels were more common in children. Adults more often reported abdominal pain and longer duration of diarrhea. Symptomatic aEPEC infection was associated with leukocytosis in 24% of patients. EPEC load >0.1% was associated with symptomatic infection; however, loads varied greatly. Co-infecting pathogens did not alter diarrhea severity or EPEC load. Longitudinal data reveal that some are colonized for months to years or are repeatedly infected. aEPEC is associated with a wide array of symptoms in adults, ranging from asymptomatic carriage to severe diarrhea. Higher EPEC loads are associated with presence of symptoms, but bacterial load does not predict disease or severity. Future studies are needed to understand bacterial and host factors that contribute to aEPEC pathogenicity to improve diagnostic tools and clinical care." @default.
• W4290375595 created "2022-08-07" @default.
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• W4290375595 date "2022-11-01" @default.
• W4290375595 modified "2023-09-26" @default.
• W4290375595 title "Clinical Manifestations and Stool Load of Atypical Enteropathogenic Escherichia coli Infections in United States Children and Adults" @default.
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• W4290375595 doi "https://doi.org/10.1053/j.gastro.2022.07.064" @default.
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