Evidence map›Paper›PMID 23844044›Full record

ArticlePloS one2013

Livestock-associated methicillin and multidrug resistant Staphylococcus aureus is present among industrial, not antibiotic-free livestock operation workers in North Carolina.

Jessica L Rinsky, Maya Nadimpalli, Steve Wing, Devon Hall, Dothula Baron, Lance B Price, Jesper Larsen, Marc Stegger, Jill Stewart, Christopher D Heaney

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 2 pooled it
10.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

68 citing papers in PubMed, 2 syntheses or guidelines pooled it, 154 citations in OpenAlex.

  1. Methicillin-resistantFrontiers in microbiology · 2025
    Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Emergence and Genomic Characterization of aMedicina (Kaunas, Lithuania) · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Whole-Genome Analysis ofFoods (Basel, Switzerland) · 2022
    Article
  14. Application of Markov models to predict changes in nasal carriage ofJournal of occupational and environmental hygiene · 2022
    Article
  15. Article
  16. Article
  17. Environmental Injustice and Industrial Chicken Farming in Maryland.International journal of environmental research and public health · 2021
    Article
  18. Ecology and Genetic Lineages of NasalPathogens (Basel, Switzerland) · 2021
    Review
  19. Article
  20. Article

8 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 2 countries.

Jessica L RinskyDepartment of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA.
Maya Nadimpalli
Steve Wing
Devon Hall
Dothula Baron
Lance B Price
Jesper Larsen
Marc Stegger
Jill Stewart
Christopher D Heaney
University of North Carolina at Chapel Hill · USEmpowerment Program · USStatens Serum Institut · DKGeorge Washington University · USJohns Hopkins University · US

Funding

Biostatstics for Research in Environmental HealthT32ES007018 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Stephanie Engel, Rebecca Fry · 1985 to 2026
$31.3M
Rapid Emergence of Livestock-associated MRSA ST398: Host-adaptation & VirulenceR01AI101371 · NIAID · TRANSLATIONAL GENOMICS RESEARCH INST · PI PRICE, LANCE BRADLEY · 2013 to 2016
$1.6M
NIAID NIH HHS R01 AI101371NIEHS NIH HHS T32 ES007018NIEHS NIH HHS T32ES007018
6 · The paper itself

Abstract

objectivesAdministration of antibiotics to food animals may select for drug-resistant pathogens of clinical significance, such as methicillin-resistant Staphylococcus aureus (MRSA). In the United States, studies have examined prevalence of MRSA carriage among individuals exposed to livestock, but prevalence of multidrug-resistant S. aureus (MDRSA) carriage and the association with livestock raised with versus without antibiotic selective pressure remains unclear. We aimed to examine prevalence, antibiotic susceptibility, and molecular characteristics of S. aureus among industrial livestock operation (ILO) and antibiotic-free livestock operation (AFLO) workers and household members in North Carolina.

methodsParticipants in this cross-sectional study were interviewed and provided a nasal swab for S. aureus analysis. Resulting S. aureus isolates were assessed for antibiotic susceptibility, multi-locus sequence type, and absence of the scn gene (a marker of livestock association).

resultsAmong 99 ILO and 105 AFLO participants, S. aureus nasal carriage prevalence was 41% and 40%, respectively. Among ILO and AFLO S. aureus carriers, MRSA was detected in 7% (3/41) and 7% (3/42), respectively. Thirty seven percent of 41 ILO versus 19% of 42 AFLO S. aureus-positive participants carried MDRSA. S. aureus clonal complex (CC) 398 was observed only among workers and predominated among ILO (13/34) compared with AFLO (1/35) S. aureus-positive workers. Only ILO workers carried scn-negative MRSA CC398 (2/34) and scn-negative MDRSA CC398 (6/34), and all of these isolates were tetracycline resistant.

conclusionsDespite similar S. aureus and MRSA prevalence among ILO and AFLO-exposed individuals, livestock-associated MRSA and MDRSA (tetracycline-resistant, CC398, scn-negative) were only present among ILO-exposed individuals. These findings support growing concern about antibiotics use and confinement in livestock production, raising questions about the potential for occupational exposure to an opportunistic and drug-resistant pathogen, which in other settings including hospitals and the community is of broad public health importance.

Indexed as

AdolescentAdultAnimalsAnti-Bacterial AgentsCarrier StateCross-Sectional StudiesDrug Resistance, Multiple, BacterialFemaleHumansLivestockMaleMethicillin-Resistant Staphylococcus aureusMicrobial Sensitivity TestsMiddle AgedNorth CarolinaNoseAnti-Bacterial Agents

Identifiers

PMID23844044
PMCPMC3699663
OpenAlexW2085617395

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.