Temporal shifts in antimicrobial resistance phenotypes in indicator and third-generation cephalosporin-resistant Escherichia coli from Spanish livestock during a period of reduced veterinary antimicrobial sales
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Le résumé fourni par la source
Abstract Antimicrobial resistance (AMR) in food-producing animals is a major One Health concern. In Europe, surveillance programs monitor resistance in commensal Escherichia coli as an indicator organism. However, single-drug metrics often overlook co-resistance patterns and links between antimicrobial use (AMU) and multidrug resistance (MDR). Here, we analyzed Spanish surveillance data on indicator and third‑generation cephalosporin‑resistant (3GCR) E. coli from caecal samples of broilers, turkeys, pigs and cattle at slaughter (2014–2023). Minimum inhibitory concentrations (MICs) for 14 antimicrobials were classified as wild type (WT) or non-wild type (NWT) and binary WT/NWT profiles were clustered using multivariate Bernoulli mixture models and linked to veterinary antimicrobial sales for 2014–2022 using multinomial logistic regression. Among 7,532 isolates (3,265 indicator, 4,267 3GCR), high NWT proportions were observed for ampicillin, tetracycline, sulfonamides, trimethoprim, chloramphenicol and fluoroquinolones, with low NWT frequencies (< 2%) to colistin, carbapenems and tigecycline. Indicator isolates grouped into five major resistance-profile clusters, four shared with 3GCR isolates. Over the 2014–2023 period, frequency of high-resistance clusters decreased, especially in poultry, while low‑resistance clusters increased. Higher antimicrobial sales were associated with greater odds of membership in MDR and fluoroquinolone‑resistant clusters. These results suggest that reduced veterinary antibiotics sales in Spain are associated with a shift towards less resistant indicator and, to a lesser extent, 3GCR E. coli populations, and that both compartments show partially overlapping resistance-pattern dynamics.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Temporal shifts in antimicrobial resistance phenotypes in indicator and third-generation cephalosporin-resistant Escherichia coli from Spanish livestock during a period of reduced veterinary antimicrobial sales
- Date Crossref
- 09/08/2026
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Universidad Complutense de Madrid pays non établi dans la noticeUniversité ou école supérieure
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Empresarios Agrupados pays non établi dans la noticeInstitution
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Ministerio de Agricultura pays non établi dans la noticeOrganisme public
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Faculty of Veterinary Medicine Department of Animal Health pays non établi dans la noticeUniversité ou école supérieure
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Complutense University of Madrid VISAVET Health Surveillance Centre pays non établi dans la noticeUniversité ou école supérieure
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Tecnologías y Servicios Agrarios S.A (TRAGSATEC) pays non établi dans la noticeInstitution
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Laboratorio Central de Veterinaria pays non établi dans la noticeInstitution
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Subdirección General de Sanidad e Higiene Animal y Trazabilidad pays non établi dans la noticeInstitution
Universidad Complutense de Madrid, Empresarios Agrupados et Ministerio de Agricultura, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.