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A Novel Trimethoprim Resistance Gene, dfrA36, Characterized from Escherichia coli from Calves.

Wüthrich D, Brilhante M, Hausherr A, Becker J, Meylan M, Perreten V.

mSphere. 2019 May 8;4(3). pii: e00255-19. doi: 10.1128/mSphere.00255-19.


Outbreaks of a Methicillin-Resistant Staphylococcus aureus Clone ST398-t011 in a Hungarian Equine Clinic: Emergence of Rifampicin and Chloramphenicol Resistance After Treatment with These Antibiotics.

Albert E, Biksi I, Német Z, Csuka E, Kelemen B, Morvay F, Bakos Z, Bodó G, Tóth B, Collaud A, Rossano A, Perreten V.

Microb Drug Resist. 2019 May 8. doi: 10.1089/mdr.2018.0384. [Epub ahead of print]


Characterisation of a porcine Escherichia coli strain from Switzerland carrying mcr-1 on a conjugative multidrug resistance IncHI2 plasmid.

Brilhante M, Donà V, Overesch G, Endimiani A, Perreten V.

J Glob Antimicrob Resist. 2019 Mar;16:123-124. doi: 10.1016/j.jgar.2018.12.007. Epub 2018 Dec 21. No abstract available.


Improving the quality and workflow of bacterial genome sequencing and analysis: paving the way for a Switzerland-wide molecular epidemiological surveillance platform.

Egli A, Blanc DS, Greub G, Keller PM, Lazarevic V, Lebrand A, Leib S, Neher RA, Perreten V, Ramette A, Schrenzel J, Stephan R, Wagner K, Wuethrich D, Xenarios I.

Swiss Med Wkly. 2018 Dec 15;148:w14693. doi: 10.4414/smw.2018.14693. eCollection 2018 Dec 3.


Evaluation of EDTA- and DPA-Based Microdilution Phenotypic Tests for the Detection of MCR-Mediated Colistin Resistance in Enterobacteriaceae.

Büdel T, Clément M, Bernasconi OJ, Principe L, Perreten V, Luzzaro F, Endimiani A.

Microb Drug Resist. 2019 May;25(4):494-500. doi: 10.1089/mdr.2018.0275. Epub 2018 Nov 15.


Limited added value of fungal ITS amplicon sequencing in the study of bovine abortion.

Vidal S, Brandt BW, Dettwiler M, Abril C, Bressan J, Greub G, Frey CF, Perreten V, Rodriguez-Campos S.

Heliyon. 2018 Nov 5;4(11):e00915. doi: 10.1016/j.heliyon.2018.e00915. eCollection 2018 Nov.


Characterization of Staphylococcal Cassette Chromosome mec Elements from Methicillin-Resistant Staphylococcus pseudintermedius Infections in Australian Animals.

Worthing KA, Schwendener S, Perreten V, Saputra S, Coombs GW, Pang S, Davies MR, Abraham S, Trott DJ, Norris JM.

mSphere. 2018 Nov 7;3(6). pii: e00491-18. doi: 10.1128/mSphere.00491-18.


Predominance of a macrolide-lincosamide-resistant Brachyspira hyodysenteriae of sequence type 196 in Swiss pig herds.

García-Martín AB, Perreten V, Rossano A, Schmitt S, Nathues H, Zeeh F.

Vet Microbiol. 2018 Nov;226:97-102. doi: 10.1016/j.vetmic.2018.10.007. Epub 2018 Oct 11.


Antimicrobial susceptibility patterns of blood culture isolates from foals in Switzerland.

Fouché N, Gerber V, Thomann A, Perreten V.

Schweiz Arch Tierheilkd. 2018 Nov;160(11):665-671. doi: 10.17236/sat00184.


Comparative Genomics of the First and Complete Genome of "Actinobacillus porcitonsillarum" Supports the Novel Species Hypothesis.

Donà V, Perreten V.

Int J Genomics. 2018 Sep 30;2018:5261719. doi: 10.1155/2018/5261719. eCollection 2018.


Correction for Gómez-Sanz et al., "First Staphylococcal Cassette Chromosome mec Containing a mecB-Carrying Gene Complex Independent of Transposon Tn6045 in a Macrococcus caseolyticus Isolate from a Canine Infection".

Gómez-Sanz E, Schwendener S, Thomann A, Gobeli Brawand S, Perreten V.

Antimicrob Agents Chemother. 2018 Oct 24;62(11). pii: e01916-18. doi: 10.1128/AAC.01916-18. Print 2018 Nov. No abstract available.


The integrase of the Macrococcus caseolyticus resistance island mecD (McRImecD ) inserts DNA site-specifically into Staphylococcus and Bacillus chromosomes.

Schwendener S, Perreten V.

Mol Microbiol. 2018 Nov;110(3):455-468. doi: 10.1111/mmi.14112. Epub 2018 Oct 14.


Acinetobacter in veterinary medicine, with an emphasis on Acinetobacter baumannii.

van der Kolk JH, Endimiani A, Graubner C, Gerber V, Perreten V.

J Glob Antimicrob Resist. 2019 Mar;16:59-71. doi: 10.1016/j.jgar.2018.08.011. Epub 2018 Aug 23. Review.


The EDTA-based disk-combination tests are unreliable for the detection of MCR-mediated colistin-resistance in Enterobacteriaceae.

Clément M, Büdel T, Bernasconi OJ, Principe L, Perreten V, Luzzaro F, Endimiani A.

J Microbiol Methods. 2018 Oct;153:31-34. doi: 10.1016/j.mimet.2018.08.008. Epub 2018 Aug 20.


Multiresistant Brachyspira hyodysenteriae shedding by pigs during the fattening period.

Massacci FR, De Luca S, Cucco L, Tentellini M, Perreten V, Pezzotti G, Magistrali CF.

Vet Rec. 2018 Sep 1;183(8):264. doi: 10.1136/vr.104886. Epub 2018 Jun 27. No abstract available.


Short communication: Lack of intramammary niche recolonization during a sanitation program for the contagious mastitis pathogen Staphylococcus aureus genotype B.

Sartori C, Perreten V, Ivanovic I, Härdi-Landerer MC, Graber HU.

J Dairy Sci. 2018 Sep;101(9):8296-8300. doi: 10.3168/jds.2017-14313. Epub 2018 Jun 13.


Isolation of Brachyspira hyodysenteriae from a crow (Corvus corone) in close proximity to commercial pigs.

Zeeh F, Klausmann S, Masserey Y, Nathues H, Perreten V, Rohde J.

Vet J. 2018 Jun;236:111-112. doi: 10.1016/j.tvjl.2018.05.002. Epub 2018 May 4.


Corrigendum to "Transposon-associated lincosamide resistance lnu(C) gene identified in Brachyspira hyodysenteriae ST83" [Vet. Microbiol. 214 (2018) 51-55].

De Luca S, Nicholson P, Magistrali CF, García-Martín AB, Rychener L, Zeeh F, Frey J, Perreten V.

Vet Microbiol. 2018 Jul;220:113. doi: 10.1016/j.vetmic.2018.04.035. Epub 2018 May 10. No abstract available.


Extensively drug-resistant community-acquired Acinetobacter baumannii sequence type 2 in a dog with urinary tract infection in Thailand.

Chanchaithong P, Prapasarakul N, Sirisopit Mehl N, Suanpairintr N, Teankum K, Collaud A, Endimiani A, Perreten V.

J Glob Antimicrob Resist. 2018 Jun;13:33-34. doi: 10.1016/j.jgar.2018.02.007. Epub 2018 Feb 21. No abstract available.


Transposon-associated lincosamide resistance lnu(C) gene identified in Brachyspira hyodysenteriae ST83.

De Luca S, Nicholson P, Magistrali CF, García-Martín AB, Rychener L, Zeeh F, Frey J, Perreten V.

Vet Microbiol. 2018 Feb;214:51-55. doi: 10.1016/j.vetmic.2017.12.003. Epub 2017 Dec 7. Erratum in: Vet Microbiol. 2018 May 10;:.


Complete Genome Sequence of the Type Strain of Macrococcus canis.

Gobeli Brawand S, Rychener L, Schwendener S, Pantůček R, Perreten V.

Genome Announc. 2018 Jan 18;6(3). pii: e01507-17. doi: 10.1128/genomeA.01507-17.


Bacterial, fungal, parasitological and pathological analyses of abortions in small ruminants from 2012-2016.

Schnydrig P, Vidal S, Brodard I, Frey C, Posthaus H, Perreten V, Rodriguez-Campos S.

Schweiz Arch Tierheilkd. 2017 Dec;159(12):647-656. doi: 10.17236/sat00136.


Neglected zoonotic agents in cattle abortion: tackling the difficult to grow bacteria.

Vidal S, Kegler K, Greub G, Aeby S, Borel N, Dagleish MP, Posthaus H, Perreten V, Rodriguez-Campos S.

BMC Vet Res. 2017 Dec 2;13(1):373. doi: 10.1186/s12917-017-1294-y.


Intestinal colonisation with extended-spectrum cephalosporin-resistant Enterobacteriaceae in different populations in Switzerland: prevalence, risk factors and molecular features.

Pires J, Kuenzli E, Hauser C, Tinguely R, Kasraian S, Atkinson A, Rauch A, Furrer H, Perreten V, Marschall J, Hatz C, Endimiani A.

J Glob Antimicrob Resist. 2018 Mar;12:17-19. doi: 10.1016/j.jgar.2017.11.007. Epub 2017 Nov 21. No abstract available.


Deciphering the complete deletion of the mgrB locus in an unusual colistin-resistant Klebsiella pneumoniae isolate colonising the gut of a traveller returning from India.

Bernasconi OJ, Donà V, Pires J, Kuenzli E, Hatz C, Luzzaro F, Perreten V, Endimiani A.

Int J Antimicrob Agents. 2018 Mar;51(3):529-531. doi: 10.1016/j.ijantimicag.2017.09.014. Epub 2017 Oct 9. No abstract available.


Amplicon sequencing of bacterial microbiota in abortion material from cattle.

Vidal S, Kegler K, Posthaus H, Perreten V, Rodriguez-Campos S.

Vet Res. 2017 Oct 10;48(1):64. doi: 10.1186/s13567-017-0470-1.


Brachyspira hyodysenteriae detection in the large intestine of slaughtered pigs.

Zeeh F, De Luca S, Nicholson P, Grützner N, Nathues C, Perreten V, Nathues H.

J Vet Diagn Invest. 2018 Jan;30(1):56-63. doi: 10.1177/1040638717722816. Epub 2017 Sep 14.


Heterogeneous Genetic Location of mcr-1 in Colistin-Resistant Escherichia coli Isolates from Humans and Retail Chicken Meat in Switzerland: Emergence of mcr-1-Carrying IncK2 Plasmids.

Donà V, Bernasconi OJ, Pires J, Collaud A, Overesch G, Ramette A, Perreten V, Endimiani A.

Antimicrob Agents Chemother. 2017 Oct 24;61(11). pii: e01245-17. doi: 10.1128/AAC.01245-17. Print 2017 Nov.


Evaluation of a New Commercial Microarray Platform for the Simultaneous Detection of β-Lactamase and mcr-1 and mcr-2 Genes in Enterobacteriaceae.

Bernasconi OJ, Principe L, Tinguely R, Karczmarek A, Perreten V, Luzzaro F, Endimiani A.

J Clin Microbiol. 2017 Oct;55(10):3138-3141. doi: 10.1128/JCM.01056-17. Epub 2017 Aug 2. No abstract available.


Macrococcus canis and M. caseolyticus in dogs: occurrence, genetic diversity and antibiotic resistance.

Cotting K, Strauss C, Rodriguez-Campos S, Rostaher A, Fischer NM, Roosje PJ, Favrot C, Perreten V.

Vet Dermatol. 2017 Dec;28(6):559-e133. doi: 10.1111/vde.12474. Epub 2017 Jul 26.


Pathotyping and antibiotic resistance of porcine enterovirulent Escherichia coli strains from Switzerland (2014-2015).

Brand P, Gobeli S, Perreten V.

Schweiz Arch Tierheilkd. 2017 Jul;159(7):373-380. doi: 10.17236/sat00120.


Erratum to 'Intestinal colonisation with extended-spectrum cephalosporin- and colistin-resistant Enterobacteriaceae in HIV-positive individuals in Switzerland: molecular features and risk factors' [International Journal of Antimicrobial Agents 49/4 (2017) 519-521].

Pires J, Bernasconi OJ, Hauser C, Tinguely R, Atkinson A, Perreten V, Dona V, Rauch A, Furrer H, Endimiani A.

Int J Antimicrob Agents. 2017 Aug;50(2):276. doi: 10.1016/j.ijantimicag.2017.05.002. Epub 2017 Jun 5. No abstract available.


Novel β-Lactamase blaARL in Staphylococcus arlettae.

Andreis SN, Perreten V, Schwendener S.

mSphere. 2017 May 3;2(3). pii: e00117-17. doi: 10.1128/mSphere.00117-17. eCollection 2017 May-Jun.


Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows.

Dolder C, van den Borne BHP, Traversari J, Thomann A, Perreten V, Bodmer M.

J Dairy Sci. 2017 Jul;100(7):5653-5663. doi: 10.3168/jds.2016-11639. Epub 2017 May 3.


New Macrolide-Lincosamide-Streptogramin B Resistance Gene erm(48) on the Novel Plasmid pJW2311 in Staphylococcus xylosus.

Wipf JRK, Riley MC, Kania SA, Bemis DA, Andreis S, Schwendener S, Perreten V.

Antimicrob Agents Chemother. 2017 Jun 27;61(7). pii: e00066-17. doi: 10.1128/AAC.00066-17. Print 2017 Jul.


Evidence for the evolutionary steps leading to mecA-mediated β-lactam resistance in staphylococci.

Rolo J, Worning P, Boye Nielsen J, Sobral R, Bowden R, Bouchami O, Damborg P, Guardabassi L, Perreten V, Westh H, Tomasz A, de Lencastre H, Miragaia M.

PLoS Genet. 2017 Apr 10;13(4):e1006674. doi: 10.1371/journal.pgen.1006674. eCollection 2017 Apr.


Evolutionary Origin of the Staphylococcal Cassette Chromosome mec (SCCmec).

Rolo J, Worning P, Nielsen JB, Bowden R, Bouchami O, Damborg P, Guardabassi L, Perreten V, Tomasz A, Westh H, de Lencastre H, Miragaia M.

Antimicrob Agents Chemother. 2017 May 24;61(6). pii: e02302-16. doi: 10.1128/AAC.02302-16. Print 2017 Jun.


Plasmids Carrying blaCMY -2/4 in Escherichia coli from Poultry, Poultry Meat, and Humans Belong to a Novel IncK Subgroup Designated IncK2.

Seiffert SN, Carattoli A, Schwendener S, Collaud A, Endimiani A, Perreten V.

Front Microbiol. 2017 Mar 15;8:407. doi: 10.3389/fmicb.2017.00407. eCollection 2017.


Short-term increase in prevalence of nasopharyngeal carriage of macrolide-resistant Staphylococcus aureus following mass drug administration with azithromycin for trachoma control.

Bojang E, Jafali J, Perreten V, Hart J, Harding-Esch EM, Sillah A, Mabey DC, Holland MJ, Bailey RL, Roca A, Burr SE.

BMC Microbiol. 2017 Mar 28;17(1):75. doi: 10.1186/s12866-017-0982-x.


Novel methicillin resistance gene mecD in clinical Macrococcus caseolyticus strains from bovine and canine sources.

Schwendener S, Cotting K, Perreten V.

Sci Rep. 2017 Mar 8;7:43797. doi: 10.1038/srep43797.


Intestinal colonisation with extended-spectrum cephalosporin- and colistin-resistant Enterobacteriaceae in HIV-positive individuals in Switzerland: molecular features and risk factors.

Pires J, Bernasconi OJ, Hauser C, Tinguely R, Atkinson A, Perreten V, Donà V, Rauch A, Furrer H, Endimiani A.

Int J Antimicrob Agents. 2017 Apr;49(4):519-521. doi: 10.1016/j.ijantimicag.2017.02.004. Epub 2017 Feb 27. No abstract available. Erratum in: Int J Antimicrob Agents. 2017 Aug;50(2):276.


Differential Ability of Bovine Antimicrobial Cathelicidins to Mediate Nucleic Acid Sensing by Epithelial Cells.

Baumann A, Kiener MS, Haigh B, Perreten V, Summerfield A.

Front Immunol. 2017 Feb 1;8:59. doi: 10.3389/fimmu.2017.00059. eCollection 2017.


MRSA USA300, USA300-LV and ST5-IV in pigs, Cuba.

Baez M, Collaud A, Espinosa I, Perreten V.

Int J Antimicrob Agents. 2017 Feb;49(2):259-261. doi: 10.1016/j.ijantimicag.2016.12.001. Epub 2017 Jan 3. No abstract available.


Macrococcus canis sp. nov., a skin bacterium associated with infections in dogs.

Gobeli Brawand S, Cotting K, Gómez-Sanz E, Collaud A, Thomann A, Brodard I, Rodriguez-Campos S, Strauss C, Perreten V.

Int J Syst Evol Microbiol. 2017 Mar;67(3):621-626. doi: 10.1099/ijsem.0.001673. Epub 2017 Apr 3.


A Novel erm(44) Gene Variant from a Human Staphylococcus saprophyticus Isolate Confers Resistance to Macrolides and Lincosamides but Not Streptogramins.

Strauss C, Hu Y, Coates A, Perreten V.

Antimicrob Agents Chemother. 2016 Dec 27;61(1). pii: e01655-16. doi: 10.1128/AAC.01655-16. Print 2017 Jan.


Complete Genome Sequences of Three Important Methicillin-Resistant Clinical Isolates of Staphylococcus pseudintermedius.

Riley MC, Perreten V, Bemis DA, Kania SA.

Genome Announc. 2016 Oct 20;4(5). pii: e01194-16. doi: 10.1128/genomeA.01194-16.


Isolation and identification of Caviibacter abscessus from cervical abscesses in a series of pet guinea pigs (Cavia porcellus).

Bemis DA, Johnson BH, Bryant MJ, Jones RD, McCleery BV, Greenacre CB, Perreten V, Kania SA.

J Vet Diagn Invest. 2016 Nov;28(6):763-769. Epub 2016 Oct 3.


Intestinal colonisation with extended-spectrum cephalosporin-resistant Escherichia coli in Swiss pets: molecular features, risk factors and transmission with owners.

Pires J, Bernasconi OJ, Kasraian S, Hilty M, Perreten V, Endimiani A.

Int J Antimicrob Agents. 2016 Dec;48(6):759-760. doi: 10.1016/j.ijantimicag.2016.08.007. Epub 2016 Sep 20. No abstract available.


European multicenter study on antimicrobial resistance in bacteria isolated from companion animal urinary tract infections.

Marques C, Gama LT, Belas A, Bergström K, Beurlet S, Briend-Marchal A, Broens EM, Costa M, Criel D, Damborg P, van Dijk MA, van Dongen AM, Dorsch R, Espada CM, Gerber B, Kritsepi-Konstantinou M, Loncaric I, Mion D, Misic D, Movilla R, Overesch G, Perreten V, Roura X, Steenbergen J, Timofte D, Wolf G, Zanoni RG, Schmitt S, Guardabassi L, Pomba C.

BMC Vet Res. 2016 Sep 22;12(1):213.

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