National Prevalence of Extended-Spectrum Beta-lactamase Producing Enterobacteriaceae (ESBL) in the Ambulatory and Acute Care Settings in the United States in 2015

Abstract

Methods. Susceptibility data from non-duplicate organisms including E. coli, K. pneumoniae, and P. mirabilis were collected from 346 hospitals. ESBL was identified per NHSN definitions. Organisms were classified into ambulatory, admission, and hospital-onset (HO) periods based on collection time. All data were consolidated into CMS National Hospital Data Provider IDs. The raking method was applied per CMS national hospital distribution by location, teaching status, urban/rural status, and bed size to project the national prevalence estimates.