Cited by 829Antibiotic Use and ResistancePharmacovigilance and Adverse Drug ReactionsInfection Control in Healthcare

Health care use and serious infection prevalence associated with penicillin “allergy” in hospitalized patients: A cohort study.

Macy, Eric, Contreras, Richard·2014·Journal of Allergy and Clinical Immunology

Abstract

Background Penicillin is the most common drug "allergy" noted at hospital admission, although it is often inaccurate.Objective We sought to determine total hospital days, antibiotic exposures, and the prevalence rates of Clostridium difficile, methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-resistant Enterococcus (VRE) in patients with and without penicillin "allergy" at hospital admission.Methods We performed a retrospective, matched cohort study of subjects admitted to Kaiser Foundation hospitals in Southern California during 2010 through 2012.Results It was possible to match 51,582 (99.6% of all possible cases) unique hospitalized subjects with penicillin "allergy" to 2 unique discharge diagnosis category-matched, sex-matched, age-matched, and date of admission-matched control subjects each. Cases with penicillin "allergy" averaged 0.59 (9.9%; 95% CI, 0.47-0.71) more total hospital days during 20.1 ± 10.5 months of follow-up compared with control subjects. Cases were treated with significantly more fluoroquinolones, clindamycin, and vancomycin (P < .0001) for each antibiotic compared with control subjects. Cases had 23.4% (95% CI, 15.6% to 31.7%) more C difficile, 14.1% (95% CI, 7.1% to 21.6%) more MRSA, and 30.1% (95% CI, 12.5% to 50.4%) more VRE infections than expected compared with control subjects.Conclusions A penicillin "allergy" history, although often inaccurate, is not a benign finding at hospital admission. Subjects with a penicillin "allergy" history spend significantly more time in the hospital. Subjects with a penicillin "allergy" history are exposed to significantly more antibiotics previously associated with C difficile and VRE. Drug "allergies" in general, but most those notably to penicillin, are associated with increased hospital use and increased C difficile, MRSA, and VRE prevalence.

Integrity signals

Registry

Crossref · 10.1016/j.jaci.2013.09.021

Cites

33 of 33 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Multiple studies have described that persons with reported penicillin or another ß-lactam antibiotic allergy have higher rates of surgical-site infections, methicillin-resistant Staphylococcus aureus infections, and higher medical care usage.

    “Multiple studies have described that persons with reported penicillin or another ß-lactam antibiotic allergy have higher rates of surgical-site infections, methicillin-resistant Staphylococcus aureus infections, and higher medical care usage (653,662–664).”

    From Sexually Transmitted Infections Treatment Guidelines, 2021 (2021) · cites this paper as [662]

Cites

Flagged first, then by citations

1 of the 34 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Macy, E., & Contreras, R.
Affiliations
Kaiser Permanente (US)
Corresponding author
Macy, Eric
Venue
Journal of Allergy and Clinical Immunology
Publisher
Elsevier BV
Published
2014-03
Volume
133
Issue
3
Pages
790-796
ISSN
0091-6749 (ISSN-L)
OpenAlex
W2096270055
Cited by
829
References
34
Citations by year
2026: 67 · 2025: 70 · 2024: 68 · 2023: 69 · 2022: 81 · 2021: 78 · 2020: 85 · 2019: 96 · 2018: 72 · 2017: 64 · 2016: 37 · 2015: 27 · 2014: 13 · 2013: 1
FWCI
23.08
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Allergy and Clinical Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Antibiotic Use and Resistance
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Pharmacovigilance and Adverse Drug Reactions
  • Health Sciences › Medicine › Infectious Diseases › Infection Control in Healthcare
Keywords
penicillin allergy, drug hypersensitivity, Clostridium difficile infection, methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, antibiotic exposure, length of hospital stay, hospitalized patients, fluoroquinolones, clindamycin, vancomycin, antibiotic stewardship
MeSH terms
Adult, Aged, Bacterial Infections, Delivery of Health Care, Drug Hypersensitivity, Female, Hospitalization, Humans, Length of Stay, Male, Middle Aged, Penicillins, Retrospective Studies, Cohort Studies, Prevalence, Health Care Costs

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review