2025
Original- und Übersichtsarbeiten
Alsaaod, M., Stevens, M.J.A., Cernela, N., Horlbog, J.A., Stephan, R., Albini, S. (2025). Retrospective analysis of persistent clonal Salmonella enterica strains of various serovars in commercial Swiss broiler farms. MicrobiologyOpen 14:e70149. https://doi.org/10.1002/mbo3.70149
Barmettler, K., Boss, S., Biggel, M., Stephan, R. (2025). Occurrence of Salmonella and presumptive Bacillus cereus in sesame products from Swiss retail stores. Italian Journal of Food Safety 14:12691. doi:10.4081/ijfs.2025.12691
Barmettler, K., Fäh, A., Naegeli, H.P., Weisser, S., Poetzsch, S.N., Stephan, R. (2025). Colchicum autumnale poisoning in a dairy farm in Switzerland – a glimpse on the milk safety aspect. Italian Journal of Food Safety, accepted. 14:13828. doi:10.4081/ijfs.2025.13828
Barmettler, K., Kelbert, L., Horlbog, J.A., Cernela, N., Biggel, M., Stephan, R. (2025). Salmonella in Swiss and Imported Retail Chicken Meat - a Cross-Sectional Study, Journal of Food Protection 88(7):100532. https://doi.org/10.1016/j.jfp.2025.100532
Barmettler, K., Waser, S., Stephan, R. (2025). Microbiological quality of plant-based meat-alternative products collected at retail level in Switzerland. Journal of Food Protection 88, 100402. https://doi.org/10.1016/j.jfp.2024.100402
Biggel, M., Nüesch-Inderbinen, M., Logean, M., Corti, S., Kelbert, L., Stephan, R. (2025). Genomic characterization of Klebsiella spp. from bovine mastitis: dissemination of a conserved, highly transmissible lac+ fec+ plasmid drives burden of disease. Applied and Environmental Microbiology 91(12):e0116225. doi: 10.1128/aem.01162-25.
Bokhale, M., Njage, P.M.K., Wambui, J., Moleleki, L.N. (2025). Phenotypic profiling of carbon utilization of Pectobacterium brasiliense (Pbr1692). FEMS Microbiology Letters 372, fnaf119, https://doi.org/10.1093/femsle/fnaf119
Brait, V., Böff, L., Zmarlak-Feher, N.M., Jourdan-Da Silva, N., Mazzilli, S., Pardos de la Gandara, M., Moura, A., Mossong, J., Ernst, C., Ragimbeau, C., Pijnacker, R., Lanzl, M., Brandal, L.T., Lange, H., Stephan, R., Biggel, M., Raess, M., Daniel, O., Spačková, M., Clarke, C., Cormican, M., Colgan, A., Garvey, P., Mckeown, P., Dryselius, R., Karamehmedovic, N., Grilc, E., Trkov, M., Pirš, M., Brown, D., Browning, L., Hoban, A., Godbole, G., Painset, A., Chattaway, M.A., Vainio, A., Rimhanen-Finne, R., Fischer, J., Lamparter, M.C., Mattheus, W., Commans, R., Gverić Grginić, A., Mlinarić, I., Pem-Novosel, I., Kurečić Filipović, S., Ferencak, I., Jurić, D., Niskanen, T., Jernberg, C., Rizzi, V., Sarno, E., Kornschober, C., Wolfsbauer, A., Werber, D., Simon, S., Gymoese, P., Ethelberg, S., Müller, L., Maritschnik, S., Meinen, A., Pietsch, M. (2025). Insights into international, recurring outbreaks of Salmonella Strathcona associated with tomatoes, 2011-2024. Eurosurveillance 30(41):pii=2500224. https://doi.org/10.2807/1560-7917.ES.2025.30.41.2500224.
Cianciolo Cosentino, C., Stevens, M.J.A., Eshwar, A.K., Muchaamba, F., Guldimann, C., Stephan, R., Lehner, A. (2025). Uncovering the pathogenic mechanisms of Cronobacter turicensis: a dual transcriptomics study using a zebrafish larvae model. Microbial Pathogenesis 202, 107374. https://doi.org/10.1016/j.micpath.2025.107374.
Fässler, N., de Arriba, M., Biggel, M., Jelocinik, M., Borel, N., Marti, H. (2025). Development of shuttle vector-based transformation systems for veterinary and zoonotic chlamydiae. Microbiology Spectrum 13(9):e0164125. doi: 10.1128/spectrum.01641-25.
Fetsch, A., Sarnino, N., Filter, M., Koutsoumanis, K., Nauta, M., Wiedmann, M., Stärk, K.D.C., Ehling-Schulz, M., Stephan, R., Johler, S. (2025). Microbial risk analysis from a food industry perspective – insights from an international survey. Microbial Risk Analysis 29, 100340. https://doi.org/10.1016/j.mran.2024.100340.
Findlay, J., Nordmann, P., Stephan, R., NARA network, Poirel, L. (2025). Detection of OXA-23-producing Proteus mirabilis in Switzerland. European Journal of Clinical Microbiology and Infectious Diseases 44, 759–762. https://doi.org/10.1007/s10096-024-04972-y
Ghielmetti, G., Stevens, M.J.A., Schmitt, S., Kittl, S., Cernela, N., Biggel, M., Schulthess, B., Keller, P.M., Schrenzel, J., Stephan, R. (2025). Multi-host distribution of Rhodococcus equi (Prescottella equi) strains and their phylogenomic clustering. BMC Microbiology 25(1):447. doi: 10.1186/s12866-025-04152-8.
Gygax, D., Ramirez, S., Chibesa, M., Simpamba, T., Riffel, M., Riffel, T., Zulu, G., Srivathsan, A., Nijland, R., Urban, L. (2025). Evaluation of nanopore sequencing for increasing accessibility of eDNA studies in biodiverse countries. PLoS One 20(10):e0333994. doi: 10.1371/journal.pone.0333994.
Ivanova, M., Laage Kragh, M., Szarvas, J., Tosun, E.S., Holmud, N.F., Gmeiner, A., Amar, C., Guldimann, C., Huynh, T.N., Karpíšková, R., García, C.R., Gomez, D., Aboagye, E., Etter, A., Centorame, P., Torresi, M., De Angelis, M.E., Pomilio, F., Okholm, A.H., Xiao, Y., Kleta, S., Lueth, S., Pietzka, A., Kovacevic, J., Pagotto, F., Rychli, K., Zdovc, I., Papič, B., Heir, E., Langsrud, S., Møretrø, T., Brown, P., Kathariou, S., Stephan, R., Tasara, T., Dalgaard, P., Murigu Kamau Njage, P., Fagerlund, A., Aarestrup, F., Truelstrup Hansen, L., Leekitcharoenphon. P. (2025). Large-scale phenotypic and genomic analysis of Listeria monocytogenes reveals diversity in the sensitivity to quaternary ammonium compounds but not to peracetic acid. Applied and Environmental Microbiology 91(4):e0182924.doi: 10.1128/aem.01829-24.
Kelbert, L., Barmettler, K., Biggel, M., Stephan, R., Nüesch-Inderbinen, M. (2025). Occurrence and characteristics of extended-spectrum ß-lactamase-producing Escherichia coli in Swiss and imported retail chicken meat. Journal of Global Antimicrobial Resistance 43:285-292. doi: 10.1016/j.jgar.2025.05.013.
Kelbert, L., Barmettler, K., Horlbog, J.A., Stevens, M.J.A., Cernela, N., Nüesch-Inderbinen, M., Stephan, S. (2025). Campylobacter in raw chicken meat at retail level: quantitative and qualitative assessment, genomic profiling and comparison with isolates from human infections. Journal of Food Protection 88(7):100540. https://doi.org/10.1016/j.jfp.2025.100540
Knörr, A., Bearth, A., Zhou, X., Stephan, R., Siegrist, M. (2025). Raw and conventional dog diets: owners’ risk perception and knowledge. Preventive Veterinary Medicine 244:106609. doi: 10.1016/j.prevetmed.2025.106609.
Laisnez, V., Vusirikala, A., Salgaard Nielsen, C., Cantaert, V., Delbrassinne, L., Mattheus, W., Verhaegen, B., Delamare, H., Jourdan-Da Silva, N., Lachmann, R., Simon, S., Cormican, M., Garvey, P., McKeown, P., Stephan, R., Brown, D., Browning, L., Hoban, A., Larkin, L., S. Typhimurium Outbreak Investigation Group, Pardos de la Gandara, M., Jernberg, C., Takkinen, J., Balasegaram, S., Van Cauteren, D. (2025). Key role of whole genome sequencing in resolving an international outbreak of monophasic Salmonella Typhimurium linked to chocolate products. BMC Infectious Disease 25(1):242. doi: 10.1186/s12879-025-10629-8.
Mandinyenya, T., Wambui, J., Muchaamba, F., Stevens, M.J.A., Tasara, T. (2025). Nisin resistance is increased through GtcA mutation induced loss of cell wall teichoic acid N-acetylglucosamine modifications in Listeria monocytogenes. International Journal of Food Microbiology 428:110954. doi: 10.1016/j.ijfoodmicro.2024.110954.
Opperman, C., Ahmed, A., De Kock, M., Spies, C., Biggel, M., Lourens, T., Singh, S., Ghebrekristos, Y., Warren, R., Goosen, W., Ghielmetti, G. (2025). Clonal spread of Mycobacterium monacense strains among patients with extrapulmonary mycobacteriosis. European Journal of Clinical Microbiology & Infectious Diseases, https://doi.org/10.1007/s10096-025-05318-y.
Rasper-Hössinger, M., Scherrer, S., Stephan, R., Seehusen, F. (2025). Stereotypic immune response in Mycobacterium avium ssp. paratuberculosis infection among different Swiss caprine genotypes. Veterinary Pathology 62(5), 728–739. DOI: 10.1177/03009858251322726
Rau, J., Etter, D., Frentzel, H., Lasch, P., Contzen, M. (2025). Reliable delineation of Bacillus cytotoxicus from other members of the Bacillus cereus group by MALDI-TOF MS – An extensive validation study. Food Control 167, 110825. https://doi.org/10.1016/j.foodcont.2024.110825
Schmid, D.T., Barmettler, K., Stevens, M.J.A., Stephan, R. (2025).Occurrence and characteristics of Salmonella spp., L. monocytogenes, Y. enterocolitica, and Campylobacter spp.in raw meat-based diets for pets. Pets 2, 35. https://doi.org/10.3390/pets2040035.
Stevens, M.J.A., Barmettler, K., Kelbert, L., Stephan, R., Nüesch-Inderbinen, M. (2025). Genome based characterization of Yersinia enterocolitica from different food matrices in Switzerland in 2024. Infection, Genetics and Evolution 128:105719. doi: 10.1016/j.meegid.2025.105719.
Stevens, M.J.A., Buvoli, G.N., Kelbert, L., Cernela, N., Stephan, R. (2025). Campylobacter species isolated from wild birds in Switzerland and comparison to isolates from food and human origin. MicrobiologyOpen MicrobiologyOpen 14:e70176. https://doi.org/10.1002/mbo3.70176
Stevens, M.J.A., Wambui, J., Corti, S., Nüesch-Inderbinen, M., Stephan, R. (2025). Weak phospholipase-positive Listeria monocytogenes: a challenge for the diagnostic laboratory. Diagnostic Microbiology and Infectious Disease 112, 3, 116802. DOI: 10.1016/j.diagmicrobio.2025.116802
Tresch, S., Biggel, M., Cernela, N., Stephan, R. (2025). Occurrence of selected foodborne pathogens on frozen berries collected at retail level in Switzerland. Journal of Food Protection 88(10):100604. doi: 10.1016/j.jfp.2025.100604
Ürel, H., Benassou, S., Marti, H, Reska, T., Sauerborn, E., Pinheiro Alves De Ssoza, Y., Perlas, A., Rayo, E., Biggel, M., Kesselheim, S., Borel, N., Martin, E.J., Venegas, C.B., Schloter, M., Schröder, K., Mittelstrass, J., Prospero, S., Ferguson, J.M., Urban, L. (2025). Nanopore- and AI-empowered microbial viability inference. GigaScience, 14, 2025, giaf100, https://doi.org/10.1093/gigascience/giaf100
Wang, Ch., Wambui, J., Fernandez Cantos, V.M., Jurt, S., Broos, J., Stephan, R., Kuipers, O.P. (2025). Heterologous expression and characterization of estercin A, a new Class II lanthipeptide derived from Clostridium estertheticum CF016, with potent antimicrobial activity against clinically relevant pathogens. Journal of Natural Products 88(2):262-273. doi: 10.1021/acs.jnatprod.4c00814
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In press
Walter, J., Stevens, M.J.A., Franzmeier, S., Nothnagel, T., Dunemann, F., Guldimann, C., Sah, I. Transcriptome analysis suggests the cell wall as the primary target of the antilisterial effect of carrots. Microbiology Spectrum, accepted.
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Preprints
Genome announcements
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Dissertationen
Schmid, D.T. (2025). Occurrence and characteristics of Salmonella spp., L. monocytogenes, Y. enterocolitica, and Campylobacter spp.in raw meat-based diets for pets. (Dr. med. vet.)
Sontheimer, L. (2025). Klebsiella Mastitis bei Milchkühen: Prävalenz, Resistenzprofile, Virulenzfaktoren, Risikofaktoren und Therapieempfehlungen. (Dr. med. vet.)
Tschannen, P. (2025). Legionellen-Untersuchungen in Wasserproben der Schweizer Armee 2010-2025 (Dr. med. vet.)
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Masterarbeiten (Vetsuisse-Fakultät)
Buvoli, G.N. (2025). Occurrence and Characteristics of Campylobacter spp. in the wild bird population in Switzerland
Scheitlin, S. (2025). Verschmutzte Tiere - Grundlagen für die einheitliche Beurteilung in der Tierhaltung und bei Schlachttieren