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Auflistung Artikel in Fachzeitschriften nach Autor "Ewers, Christa"
Anzeige der Publikationen 1-18 von 18
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2015-07-21ZeitschriftenartikelA combinational approach of multilocus sequence typing and other molecular typing methods in unravelling the epidemiology of Erysipelothrix rhusiopathiae strains from poultry and mammals Janßen, Traute; Voss, Matthias; Kühl, Michael; Semmler, Torsten; Philipp, Hans-Christian; Ewers, ChristaErysipelothrix rhusiopathiae infections re-emerged as a matter of great concern particularly in the poultry industry. In contrast to porcine isolates, molecular epidemiological traits of avian E. rhusiopathiae isolates are ...
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2022-04-30ZeitschriftenartikelA dominant clonal lineage of Streptococcus uberis in cattle in Germany Fenske, Linda; Noll, Irene; Blom, Jochen; Ewers, Christa; Semmler, Torsten; Fawzy, Ahmad; Eisenberg, TobiasBovine mastitis causes enormous economic losses in the dairy industry with Streptococcus uberis as one of the most common bacterial pathogens causing clinical and subclinical variations. In most cases mastitis can be cured ...
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2017-02-16ZeitschriftenartikelCarbapenem-resistance and pathogenicity of bovine Acinetobacter indicus-like isolates Klotz, Peter; Göttig, Stephan; Leidner, Ursula; Semmler, Torsten; Scheufen, Sandra; Ewers, ChristaThe objective of this study was to characterize blaOXA-23 harbouring Acinetobacter indicuslike strains from cattle including genomic and phylogenetic analyses, antimicrobial susceptibility testing and evaluation of ...
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2016-03-17ZeitschriftenartikelCarriage of Extended-Spectrum Beta-Lactamase-Plasmids Does Not Reduce Fitness but Enhances Virulence in Some Strains of Pandemic E. coli Lineages Schaufler, Katharina; Semmler, Torsten; Pickard, Derek J.; Toro, María de; Cruz, Fernando de la; Wieler, Lothar H.; Ewers, Christa; Guenther, SebastianPathogenic ESBL-producing E. coli lineages occur frequently worldwide, not only in a human health context but in animals and the environment, also in settings with low antimicrobial pressures. This study investigated the ...
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2014-09-16ZeitschriftenartikelCorrelation between the genomic o454-nlpD region polymorphisms, virulence gene equipment and phylogenetic group of extraintestinal Escherichia coli (ExPEC) enables pathotyping irrespective of host, disease and source of isolation Ewers, Christa; Dematheis, Flavia; Singamaneni, Haritha Devi; Nandanwar, Nishant; Fruth, Angelika; Diehl, Ines; Semmler, Torsten; Wieler, Lothar H.Background: The mutS-rpoS intergenic region in E. coli displays a mosaic structure which revealed pathotype specific patterns. To assess the importance of this region as a surrogate marker for the identification of ...
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2018-06-15ZeitschriftenartikelESBL-plasmid carriage in E. coli enhances in vitro bacterial competition fitness and serum resistance in some strains of pandemic sequence types without overall fitness cost Ranjan, Amit; Scholz, Julia; Semmler, Torsten; Wieler, Lothar H.; Ewers, Christa; Müller, Stefanie; Pickard, Derek J.; Schierack, Peter; Tedin, Karsten; Ahmed, Niyaz; Schaufler, Katharina; Guenther, SebastianBackground: Extended spectrum beta lactamase (ESBL)-producing extraintestinal pathogenic Escherichia coli infections are of global interest because of their clinical and economic impact. The ESBL resistance genes disseminate ...
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2021-06-26ZeitschriftenartikelFirst report of NDM-1 in an Acinetobacter baumannii strain from a pet animal in Europe Jacobmeyer, Lisa; Stamm, Ivonne; Semmler, Torsten; Ewers, Christa
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2012-11-26ZeitschriftenartikelFrequent Combination of Antimicrobial Multiresistance and Extraintestinal Pathogenicity in Escherichia coli Isolates from Urban Rats (Rattus norvegicus) in Berlin, Germany Guenther, Sebastian; Bethe, Astrid; Fruth, Angelika; Semmler, Torsten; Ulrich, Rainer G.; Wieler, Lothar H.; Ewers, ChristaUrban rats present a global public health concern as they are considered a reservoir and vector of zoonotic pathogens, including Escherichia coli. In view of the increasing emergence of antimicrobial resistant E. coli ...
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2016-09-01ZeitschriftenartikelGenome Sequence of Avian Escherichia coli Strain IHIT25637, an Extraintestinal Pathogenic E. coli Strain of ST131 Encoding Colistin Resistance Determinant MCR-1 Ewers, Christa; Göttig, Stephan; Bülte, Maria; Fiedler, Sophie; Tietgen, Manuela; Leidner, Ursula; Heydel, Carsten; Bauerfeind, Rolf; Semmler, TorstenSequence type 131 (ST131) is one of the predominant Escherichia coli lineages among extraintestinal pathogenic E. coli (ExPEC) that causes a variety of diseases in humans and animals and frequently shows multidrug resistance. ...
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2016-07-28ZeitschriftenartikelGenome sequence of OXA-23 producing Acinetobacter baumannii IHIT7853, a carbapenem-resistant strain from a cat belonging to international clone IC1 Ewers, Christa; Klotz, Peter; Scheufen, Sandra; Leidner, Ursula; Göttig, Stephan; Semmler, TorstenBackground: Multidrug resistance in Acinetobacter baumannii has dramatically increased in recent years worldwide. Thus, last-line antibiotics like carbapenems are increasingly being used which in turn further augments ...
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2021-04-01ZeitschriftenartikelGenomic Diversity and Virulence Potential of ESBL- and AmpC-β-Lactamase-Producing Escherichia coli Strains From Healthy Food Animals Across Europe Ewers, Christa; de Jong, Anno; Prenger-Berninghoff, Ellen; El Garch, Farid; Leidner, Ursula; Tiwari, Sumeet K.; Semmler, TorstenThe role of livestock animals as a putative source of ESBL/pAmpC E. coli for humans is a central issue of research. In a large-scale pan-European surveillance, 2,993 commensal Escherichia spp. isolates were recovered from ...
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2017-07-12ZeitschriftenartikelHighly diverse and antimicrobial susceptible Escherichia coli display a naïve bacterial population in fruit bats from the Republic of Congo Nowak, Kathrin; Fahr, Jakob; Weber, Natalie; Lübke-Becker, Antina; Semmler, Torsten; Weiss, Sabrina; Mombouli, Jean-Vivien; Wieler, Lothar H.; Guenther, Sebastian; Leendertz, Fabian H.; Ewers, ChristaBats are suspected to be a reservoir of several bacterial and viral pathogens relevant to animal and human health, but studies on Escherichia coli in these animals are sparse. We investigated the presence of E. coli in ...
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2022-04-24ZeitschriftenartikelImported Pet Reptiles and Their “Blind Passengers”—In-Depth Characterization of 80 Acinetobacter Species Isolates Unger, Franziska; Eisenberg, Tobias; Prenger-Berninghoff, Ellen; Leidner, Ursula; Semmler, Torsten; Ewers, ChristaReptiles are popular pet animals and important food sources, but the trade of this vertebrate class is—besides welfare and conservation—under debate due to zoonotic microbiota. Ninety-two shipments of live reptiles were ...
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2018-06-14ZeitschriftenartikelMultispecies and Clonal Dissemination of OXA-48 Carbapenemase in Enterobacteriaceae From Companion Animals in Germany, 2009—2016 Pulss, Sandra; Stolle, Inka; Stamm, Ivonne; Leidner, Ursula; Heydel, Carsten; Semmler, Torsten; Prenger-Berninghoff, Ellen; Ewers, ChristaThe increasing spread of carbapenemase-producing Enterobacteriaceae (CPE) poses a serious threat to public health. Recent studies suggested animals as a putative source of such bacteria. We investigated 19,025 Escherichia ...
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2011-09-08ZeitschriftenartikelPasteurella multocida Involved in Respiratory Disease of Wild Chimpanzees Köndgen, Sophie; Leider, Michaela; Lankester, Felix; Bethe, Astrid; Lübke-Becker, Antina; Leendertz, Fabian; Ewers, ChristaPasteurella multocida can cause a variety of diseases in various species of mammals and birds throughout the world but nothing is known about its importance for wild great apes. In this study we isolated P. multocida from ...
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2015-08-07ZeitschriftenartikelPhenotypic and Genotypic Characteristics of Members of the Genus Streptobacillus Eisenberg, Tobias; Nicklas, Werner; Mauder, Norman; Rau, Jörg; Contzen, Matthias; Semmler, Torsten; Hofmann, Nicola; Aledelbi, Khayrieh; Ewers, ChristaThe genus Streptobacillus (S.) remained monotypic for almost 90 years until two new species were recently described. The type species, S. moniliformis, is one of the two etiological agents of rat bite fever, an under-diagnosed, ...
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2016-11-03ZeitschriftenartikelPhylogenetic and comparative genomics of the family Leptotrichiaceae and introduction of a novel fingerprinting MLVA for Streptobacillus moniliformis Eisenberg, Tobias; Fawzy, Ahmad; Nicklas, Werner; Semmler, Torsten; Ewers, ChristaBackground: The Leptotrichiaceae are a family of fairly unnoticed bacteria containing both microbiota on mucous membranes as well as significant pathogens such as Streptobacillus moniliformis, the causative organism of ...
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2019-02-22ZeitschriftenartikelSeasonal Occurrence and Carbapenem Susceptibility of Bovine Acinetobacter baumannii in Germany Klotz, Peter; Higgins, Paul G.; Schaubmar, Andreas R.; Failing, Klaus; Leidner, Ursula; Seifert, Harald; Scheufen, Sandra; Semmler, Torsten; Ewers, ChristaAcinetobacter baumannii is one of the leading causes of nosocomial infections in humans. To investigate its prevalence, distribution of sequence types (STs), and antimicrobial resistance in cattle, we sampled 422 cattle, ...