Extended-spectrum β-lactamase-producing Enterobacteriaceae in hospital food: a risk assessment.

Objective: Determine the prevalence of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-PE) contamination of food and colonization of food handlers in a hospital kitchen and compare retrieved ESBL-PE strains with patient isolates.

Design: Cross-sectional study.

Setting: A 2,200-bed tertiary care university hospital in Switzerland.