Evidence mapPaperPMID 41724864Full record

ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]2026

Flies from meat processing facilities are carriers of multidrug-resistant Escherichia coli and diverse Staphylococcaceae species.

Matheus Zorzal Bernardes Rangel, Gustavo Guimarães Fernandes Viana, Ana Julia Camuzzi Ferrari Storck, Carolina Magri Ferraz, Sarah Bernardes Simões, Valéria Modolo Peterle, Natalia Pereira, Pamella Almeida Freire Casemiro, Alessandra Figueiredo de Castro Nassar, Vanessa Castro and 4 more

Abstract read
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Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
field-weighted citation impact
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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

14 authors.

Matheus Zorzal Bernardes RangelDepartment of Veterinary Medicine, University Vila Velha (UVV), Vila Velha, ES, 29102-920, Brazil.
Gustavo Guimarães Fernandes VianaDepartment of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, 18618-681, SP, Brazil.
Ana Julia Camuzzi Ferrari StorckFrigovix Slaughterhouse, Rodovia do Sol, km 86, Anchieta, 29230-000, Espírito Santo, Brazil.
Carolina Magri FerrazDepartment of Veterinary Medicine, University Vila Velha (UVV), Vila Velha, ES, 29102-920, Brazil.
Sarah Bernardes SimõesDepartment of Veterinary Medicine, University Vila Velha (UVV), Vila Velha, ES, 29102-920, Brazil.
Valéria Modolo PeterleDepartment of Veterinary Medicine, University Vila Velha (UVV), Vila Velha, ES, 29102-920, Brazil.
Natalia PereiraDepartment of Pathology, Reproduction and One Health, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil.
Pamella Almeida Freire CasemiroDepartment of Pathology, Reproduction and One Health, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil.
Alessandra Figueiredo de Castro NassarInstituto Biológico (IB) de São Paulo, Rua Conselheiro Rodrigues Alves 1252, São Paulo, São Paulo, 04014-002, Brazil.
Vanessa CastroInstituto Biológico (IB) de São Paulo, Rua Conselheiro Rodrigues Alves 1252, São Paulo, São Paulo, 04014-002, Brazil.
Bruna Maria Salotti-SouzaDepartment of Technology and Inspection of Products of Animal Origin, School of Veterinary Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Juliano Gonçalves PereiraDepartment of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, 18618-681, SP, Brazil.
Marita Vedovelli CardozoDepartment of Pathology, Reproduction and One Health, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil.
Gabriel Augusto Marques RossiDepartment of Veterinary Medicine, University Vila Velha (UVV), Vila Velha, ES, 29102-920, Brazil. gabriel.rossi@uvv.br.ORCID http://orcid.org/0000-0001-7967-7628

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flies are important vectors of antimicrobial resistance (AMR) in food production, but their role in meat processing environments remains poorly characterized. This study isolated Enterobacteriaceae and Staphylococcaceae (including Mammaliicoccus sciuri) from flies collected in bovine and swine slaughterhouses and meat processing industries. Phenotypic AMR was assessed, and the presence of selected antimicrobial resistance and virulence genes (mecA, sea, see, sec, stx1, stx2, and eae) was verified. Out of 60 flies collected, a total of 34 isolates were identified using MALDI-TOF with 13 different bacterial species, including Escherichia coli, Citrobacter braakii, C. freundii, Klebsiella pneumoniae, Hafnia alvei, Enterobacter kobei, S. aureus, S. epidermidis, S. saprophyticus, S. simulans, S. warneri, S. xylosus, and M. sciuri. Among Staphylococcaceae isolates, 17.6% were resistant to oxacillin and 23.5% to gentamicin. Regarding the Enterobacteriaceae isolates, 41.2% were resistant to streptomycin. Ten isolates (two E. coli, one S. epidermidis, two S. saprophyticus, one S. simulans, one S. warneri and three M. sciuri) were considered multidrug-resistant (MDR). Notably, none of the targeted genes (mecA, sea, see, sec, stx1, stx2, eae) were detected by PCR. These findings suggest that flies can disseminate important resistant opportunistic bacteria in meat processing environments, posing concerns due to the capacity of flies to transmit these bacteria across food, processing facilities, animals and humans. These results underscore the need for continuous AMR surveillance and effective vector control to reduce the risks posed by flies in meat processing environments.

Indexed as

DipteraDrug Resistance, Multiple, BacterialEscherichia coliMeatAbattoirsAnimalsAnti-Bacterial AgentsCattleMicrobial Sensitivity TestsSwineVirulence FactorsAnti-Bacterial AgentsVirulence FactorsAbattoirAntimicrobial resistanceEnterobacteriaceaeFood safetyMDRVectors

Identifiers

PMID41724864
PMCPMC12926286

What Socratic holds

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Registered trials

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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 Socratic graph.