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  • Articles
    • Latest Articles
    • COVID-19 Research and News from ASM Journals
    • mSphere of Influence: Commentaries from Early Career Microbiologists
    • Archive
  • Topics
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    • Host-Microbe Biology
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One Health

  • Open Access
    Whole-Genome Sequence Analysis of an Extensively Drug-Resistant <span class="named-content genus-species" id="named-content-1">Salmonella enterica</span> Serovar Agona Isolate from an Australian Silver Gull (<em>Chroicocephalus novaehollandiae</em>) Reveals the Acquisition of Multidrug Resistance Plasmids
    Research Article | Ecological and Evolutionary Science
    Whole-Genome Sequence Analysis of an Extensively Drug-Resistant Salmonella enterica Serovar Agona Isolate from an Australian Silver Gull (Chroicocephalus novaehollandiae) Reveals the Acquisition of Multidrug Resistance Plasmids

    Defining environmental reservoirs hosting mobile genetic elements that shuttle critically important antibiotic resistance genes is key to understanding antimicrobial resistance (AMR) from a One Health perspective. Gulls frequent public amenities, parklands, and sewage and other waste disposal sites and carry drug-resistant Escherichia coli.

    Max L. Cummins, Martina Sanderson-Smith, Peter Newton, Nicholas Carlile, David N. Phalen, Kimberly Maute, Leigh G. Monahan, Bethany J. Hoye, Steven P. Djordjevic
  • Open Access
    Horizontal Gene Transfer of Antibiotic Resistance from <span class="named-content genus-species" id="named-content-1">Acinetobacter baylyi</span> to <span class="named-content genus-species" id="named-content-2">Escherichia coli</span> on Lettuce and Subsequent Antibiotic Resistance Transmission to the Gut Microbiome
    Observation | Host-Microbe Biology
    Horizontal Gene Transfer of Antibiotic Resistance from Acinetobacter baylyi to Escherichia coli on Lettuce and Subsequent Antibiotic Resistance Transmission to the Gut Microbiome

    Previous efforts have correlated antibiotic-fed livestock and meat products with respective antibiotic resistance genes, but virtually no research has been conducted on the transmission of antibiotic resistance from plant foods to the mammalian gut (C. S. Hölzel, J. L. Tetens, and K. Schwaiger, Pathog Dis 15:671–688, 2018, https://doi.org/10.1089/fpd.2018.2501; C. M. Liu et al., mBio 9...

    Marlène Maeusli, Bosul Lee, Sarah Miller, Zeferino Reyna, Peggy Lu, Jun Yan, Amber Ulhaq, Nicholas Skandalis, Brad Spellberg, Brian Luna
  • Open Access
    Prevalence and Characteristics of Extended-Spectrum-β-Lactamase-Producing and Carbapenemase-Producing <em>Enterobacteriaceae</em> from Freshwater Fish and Pork in Wet Markets of Hong Kong
    Editor's Pick Research Article | Clinical Science and Epidemiology
    Prevalence and Characteristics of Extended-Spectrum-β-Lactamase-Producing and Carbapenemase-Producing Enterobacteriaceae from Freshwater Fish and Pork in Wet Markets of Hong Kong

    Extended-spectrum-β-lactamase-producing Enterobacteriaceae (ESBL-E) and carbapenemase-producing Enterobacteriaceae (CPE) are of global health importance, yet there is a paucity of surveillance studies on food animals in Hong Kong. Here, we report a high prevalence of ESBL-E (ranging from 0.5% to 52.4%) and CPE (0% to 9.9%) from various food animal samples procured from wet markets across Hong Kong. All CPE strains were...

    Dulmini Nanayakkara Sapugahawatte, Carmen Li, Chendi Zhu, Priyanga Dharmaratne, Kam Tak Wong, Norman Lo, Margaret Ip
  • Open Access
    Functional and Comparative Genomic Analysis of Integrated Prophage-Like Sequences in “<em>Candidatus</em> Liberibacter asiaticus”
    Research Article | Applied and Environmental Science
    Functional and Comparative Genomic Analysis of Integrated Prophage-Like Sequences in “Candidatus Liberibacter asiaticus”

    Huanglongbing (HLB) disease is threatening citrus production worldwide. The causative agent is “Candidatus Liberibacter asiaticus.” Prior work using mapping-based approaches identified prophage-like sequences in some “Ca. Liberibacter asiaticus” genomes but not all. Here, we utilized a de novo approach that expands the number of prophage-like elements found in “Ca. Liberibacter asiaticus” from 16 to...

    Marian Dominguez-Mirazo, Rong Jin, Joshua S. Weitz
  • Open Access
    <em>Salmonella</em> Genomic Island 1B Variant Found in a Sequence Type 117 Avian Pathogenic <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Isolate
    Observation | Applied and Environmental Science
    Salmonella Genomic Island 1B Variant Found in a Sequence Type 117 Avian Pathogenic Escherichia coli Isolate

    SGI1 and variants of it carry a variety of antimicrobial resistance genes, including those conferring resistance to extended-spectrum β-lactams and carbapenems, and have been found in diverse S. enterica serovars, Acinetobacter baumannii, and other members of the...

    Max Laurence Cummins, Piklu Roy Chowdhury, Marc Serge Marenda, Glenn Francis Browning, Steven Philip Djordjevic
  • Open Access
    Beaver Fever: Whole-Genome Characterization of Waterborne Outbreak and Sporadic Isolates To Study the Zoonotic Transmission of Giardiasis
    Research Article | Clinical Science and Epidemiology
    Beaver Fever: Whole-Genome Characterization of Waterborne Outbreak and Sporadic Isolates To Study the Zoonotic Transmission of Giardiasis

    Giardia duodenalis causes large numbers of gastrointestinal illness in humans. Its transmission through the contaminated surface water/wildlife intersect is significant, and the water-dwelling rodents beavers have been implicated as one important reservoir. To trace human infections to their source, we used genome techniques to characterize genetic relationships among...

    Clement K.-M. Tsui, Ruth Miller, Miguel Uyaguari-Diaz, Patrick Tang, Cedric Chauve, William Hsiao, Judith Isaac-Renton, Natalie Prystajecky
  • Open Access
    Divergent Isoprenoid Biosynthesis Pathways in <em>Staphylococcus</em> Species Constitute a Drug Target for Treating Infections in Companion Animals
    Research Article | Therapeutics and Prevention
    Divergent Isoprenoid Biosynthesis Pathways in Staphylococcus Species Constitute a Drug Target for Treating Infections in Companion Animals

    Drug-resistant Staphylococcus species are a major concern in human and veterinary medicine. There is a need for new antibiotics that exhibit a selective effect in treating infections in companion and livestock animals and that would not be used to treat human bacterial infections. We have identified fosmidomycin as an antibiotic that selectively targets certain Staphylococcus species that are often encountered in skin...

    Ana M. Misic, Christine L. Cain, Daniel O. Morris, Shelley C. Rankin, Daniel P. Beiting
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