Crit Care Resusc
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To determine the prevalence and impact of patient-reported antibiotic allergies in the intensive care unit (ICU), which are currently poorly defined. Antibiotic allergy labels (AALs) are associated with inappropriate antibiotic prescribing and with inferior patient, microbiological and hospital outcomes. ⋯ Patients with AALs had twice the odds of receiving intravenous vancomycin and half the odds of receiving narrow spectrum β-lactams, which highlights the continued need for antimicrobial stewardship initiatives.