{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T13:36:23Z","timestamp":1777642583908,"version":"3.51.4"},"reference-count":34,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T00:00:00Z","timestamp":1767744000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Foodborne Pathogens and Disease"],"abstract":"<jats:p>\n                    To characterize molecular profiles of\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    isolates from the Meishan region (2014\u20132024) via whole-genome sequencing, focusing on serotype distribution, antimicrobial resistance genes (ARGs), virulence genes, and genetic differentiation based on coding-region single nucleotide polymorphisms (cgSNPs), and provide a molecular epidemiological basis for precise prevention, control, and source tracing of\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    infections. Sixty\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    strains from distinct sources (food surveillance = 2, food poisoning = 7, intestinal surveillance = 23, pathogen surveillance = 17, healthy population surveillance = 2, and other surveillance = 9) (2014\u20132024),\n                    <jats:xref ref-type=\"table\">Table 1<\/jats:xref>\n                    , were sequenced on Illumina NextSeq 500. Serotypes (SISTR v1.1.0), multilocus sequence typing (MLST v2.0), ARGs\/virulence genes (Abricate v1.2.0; CARD v3.2.7, VFDB v202310), and a cgSNP-based phylogenetic tree were constructed using Snippy v4.6.0 with the\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Typhimurium reference genome (GCA_020714865.1). Twelve serotypes were identified; with\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Typhimurium (65.0%, 39\/60) as the dominant serotype, widely distributed across clinical, food, and outbreak sources, followed by\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Enteritidis (13.3%, 8\/60).\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Typhimurium had prevalent ST34 (59.0%) and ST19 (38.5%); ST34 was confirmed as a locally dominant clone compared to the globally common ST19. All\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Enteritidis were ST11. Five ARG categories (60 types) were detected: aminoglycoside resistance genes (96.7%) were most common, followed by \u03b2-lactam (65.0%) and sulfonamide (63.3%) resistance genes. Notably,\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Typhimurium exhibited a high multidrug resistance (MDR) rate of 64.1%, which was significantly higher than that of\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Enteritidis (12.5%). Core virulence genes (e.g.,\n                    <jats:italic toggle=\"yes\">SPI-1, TTSS-1<\/jats:italic>\n                    ) were \u226595% conserved; serotype-specific genes (e.g.,\n                    <jats:italic toggle=\"yes\">cdtB<\/jats:italic>\n                    ) were strain-specific. The 60 strains were divided into 14 clusters, with 76.7% (46 strains) assigned to 3 major clusters, confirming epidemiological links between outbreaks and sources.\n                    <jats:italic toggle=\"yes\">Salmonella<\/jats:italic>\n                    Typhimurium ST34\/ST19 with a high MDR rate is the dominant epidemic clone in the Meishan region, posing significant public health risks. cgSNPs are useful for source tracing. Targeted surveillance of dominant clones and stricter antibiotic regulation are imperative.\n                  <\/jats:p>","DOI":"10.1177\/15353141251412205","type":"journal-article","created":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T00:51:42Z","timestamp":1767055902000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Whole-Genome Sequencing and Molecular Characterization of\n                    <i>Salmonella<\/i>\n                    Isolates in the Meishan Region (2014\u20132024)"],"prefix":"10.1177","author":[{"given":"Xiaomin","family":"Wang","sequence":"first","affiliation":[{"name":"Center for Disease Control and Prevention of Meishan, Meishan, PR China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keqi","family":"Sun","sequence":"additional","affiliation":[{"name":"Center for Disease Control and Prevention of Meishan, Meishan, PR China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingxiu","family":"Li","sequence":"additional","affiliation":[{"name":"College of Public Health, Southwest Medical University, Luzhou, PR China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaorong","family":"Yang","sequence":"additional","affiliation":[{"name":"Center for Disease Control and Prevention of Sichuan Province, Chengdu, PR 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