Trends in the epidemiology of extended-spectrum beta-lactamase-producing Enterobacterales - Boulder County, Colorado, 2020-2022.

Purpose: Extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) are serious antibiotic resistance threats. We describe trends in epidemiological and clinical characteristics of ESBL-E cases in Boulder County, Colorado from 2020 to 2022.

Methods: The Colorado Department of Public Health and Environment (CDPHE) and Boulder County Public Health conduct population-based surveillance for ESBL-E as part of the Emerging Infections Program-Healthcare-Associated Infections Community Interface.