{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T01:05:35Z","timestamp":1772499935862,"version":"3.50.1"},"reference-count":55,"publisher":"Microbiology Society","issue":"9","license":[{"start":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T00:00:00Z","timestamp":1598918400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Global Food Venture-MnDrive Initiative, the National Institute of Food and Agriculture of the USDA","award":["Animal Health Formula Fund project MIN-62-091"],"award-info":[{"award-number":["Animal Health Formula Fund project MIN-62-091"]}]},{"DOI":"10.13039\/100007249","name":"University of Minnesota","doi-asserted-by":"crossref","award":["Rapid Agricultural Response Fund (RARF)"],"award-info":[{"award-number":["Rapid Agricultural Response Fund (RARF)"]}],"id":[{"id":"10.13039\/100007249","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100007249","name":"University of Minnesota","doi-asserted-by":"crossref","award":["Swine Disease Eradication Center (SDEC)"],"award-info":[{"award-number":["Swine Disease Eradication Center (SDEC)"]}],"id":[{"id":"10.13039\/100007249","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006031","name":"United States - Israel Binational Agricultural Research and Development Fund","doi-asserted-by":"crossref","award":["FI-565-17"],"award-info":[{"award-number":["FI-565-17"]}],"id":[{"id":"10.13039\/100006031","id-type":"DOI","asserted-by":"crossref"}]},{"name":"The Ram\u00f3n y Cajal postdoctoral contract from the Spanish Ministry of Economy, Industry and Competitiveness","award":["RYC-2016-20422"],"award-info":[{"award-number":["RYC-2016-20422"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,9,1]]},"abstract":"<jats:p>Serotyping has traditionally been used for subtyping of non-typhoidal <jats:italic>\n                     <jats:named-content content-type=\"genus\">\n                        <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/doi.org\/10.1601\/nm.3291\" xlink:type=\"simple\">Salmonella<\/jats:ext-link>\n                     <\/jats:named-content>\n                  <\/jats:italic> (NTS) isolates. However, its discriminatory power is limited, which impairs its use for epidemiological investigations of source attribution. Whole-genome sequencing (WGS) analysis allows more accurate subtyping of strains. However, because of the relative newness and cost of routine WGS, large-scale studies involving NTS WGS are still rare. We aimed to revisit the big picture of subtyping NTS with a public health impact by using traditional serotyping (i.e. reaction between antisera and surface antigens) and comparing the results with those obtained using WGS. For this purpose, we analysed 18\u200a282 sequences of isolates belonging to 37 serotypes with a public health impact that were recovered in the USA between 2006 and 2017 from multiple sources, and were available at the National Center for Biotechnology Information (NCBI). Phylogenetic trees were reconstructed for each serotype using the core genome for the identification of genetic subpopulations. We demonstrated that WGS-based subtyping allows better identification of sources potentially linked with human infection and emerging subpopulations, along with providing information on the risk of dissemination of plasmids and acquired antimicrobial resistance genes (AARGs). In addition, by reconstructing a phylogenetic tree with representative isolates from all serotypes (<jats:italic>n<\/jats:italic>=370), we demonstrated genetic variability within and between serotypes, which formed monophyletic, polyphyletic and paraphyletic clades. Moreover, we found (in the entire data set) an increased detection rate for AARGs linked to key antimicrobials (such as quinolones and extended-spectrum cephalosporins) over time. The outputs of this large-scale analysis reveal new insights into the genetic diversity within and between serotypes; the polyphyly and paraphyly of certain serotypes may suggest that the subtyping of NTS to serotypes may not be sufficient. Moreover, the results and the methods presented here, leading to differentiation between genetic subpopulations based on their potential risk to public health, as well as narrowing down the possible sources of these infections, may be used as a baseline for subtyping of future NTS infections and help efforts to mitigate and prevent infections in the USA and globally.<\/jats:p>","DOI":"10.1099\/mgen.0.000425","type":"journal-article","created":{"date-parts":[[2020,8,26]],"date-time":"2020-08-26T17:14:59Z","timestamp":1598462099000},"source":"Crossref","is-referenced-by-count":16,"title":["Comparing serotyping with whole-genome sequencing for subtyping of non-typhoidal Salmonella enterica: a large-scale analysis of 37 serotypes with a public health impact in the USA"],"prefix":"10.1099","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3354-7144","authenticated-orcid":false,"given":"Ehud","family":"Elnekave","sequence":"first","affiliation":[{"name":"Koret School of Veterinary Medicine, The Robert H. 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