Predictors and molecular epidemiology of community-onset extended-spectrum β-lactamase-producing Escherichia coli infection in a Midwestern community.

Objective: To identify predictors of community-onset extended-spectrum β-lactamase (ESBL)-producing Escherichia coli infection.

Design: Prospective case-control study.

Setting: Acute care hospitals and ambulatory clinics in the Chicago, Illinois, region.