{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:14:04Z","timestamp":1785420844015,"version":"3.56.0"},"reference-count":62,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T00:00:00Z","timestamp":1781222400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Science and Technology Department of Hunan Province","award":["2026JJ82039"],"award-info":[{"award-number":["2026JJ82039"]}]},{"name":"Science and Technology Department of Hunan Province","award":["2025JJ80675"],"award-info":[{"award-number":["2025JJ80675"]}]},{"award":["2026JJ82039"],"award-info":[{"award-number":["2026JJ82039"]}],"id":[{"id":"https:\/\/ror.org\/04qgr7x96","id-type":"ROR","asserted-by":"publisher"}]},{"award":["2025JJ80675"],"award-info":[{"award-number":["2025JJ80675"]}],"id":[{"id":"https:\/\/ror.org\/04qgr7x96","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010451","name":"Hunan Provincial Health Commission","doi-asserted-by":"publisher","award":["20254441"],"award-info":[{"award-number":["20254441"]}],"id":[{"id":"10.13039\/501100010451","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Cronobacter spp. are opportunistic foodborne pathogens that can cause neonatal meningitis, necrotizing enterocolitis, and sepsis. This study conducted a systematic contamination survey and whole-genome epidemiological analysis of 562 low-water-activity food samples in Hunan Province of China. The results showed an overall Cronobacter spp. detection rate of 41.99% (236\/562), with spices exhibiting the highest contamination rate (60.06%), and with high-level contamination samples (&gt;110 MPN\/g) concentrated in this category. The 236 isolates comprised 6 species, 120 sequence types, and 39 clonal complexes, with C. sakazakii being the most frequently isolated species (64.83%) and high-risk clones ST4, ST1, ST148, and ST64 prevailing. Multiple virulence genes (TraJ, fur, rcsAB, rpoS) and antimicrobial resistance genes (qnrS1, blaTEM-1, blaCTX-M-55, blaLAP-2, aac(3)-IId, aadA2, tet(A), floR, mcr-9.1, sul2) were detected. Core genome multilocus sequence typing (cgMLST) identified two clustering patterns: Cluster C, whose genetic clustering was consistent with transmission associated with potential common upstream raw materials across different brands and provinces, and Cluster G, whose clustering suggested potential persistent colonization in the production environment across multiple batches of the same brand. This study elucidates the contamination characteristics of Cronobacter spp. in low-water-activity foods from Hunan Province and provides a basis for WGS-based active surveillance and supply chain traceability.<\/jats:p>","DOI":"10.3390\/microorganisms14061320","type":"journal-article","created":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T09:49:51Z","timestamp":1781257791000},"page":"1320","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Prevalence, Genomic Characterization, and Transmission Patterns of Cronobacter spp. in Low-Water-Activity Foods from Hunan Province, China"],"prefix":"10.3390","volume":"14","author":[{"given":"Fang","family":"Liu","sequence":"first","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhifei","family":"Zhan","sequence":"additional","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yating","family":"Ma","sequence":"additional","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wansi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianbing","family":"Lai","sequence":"additional","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Chen","sequence":"additional","affiliation":[{"name":"Hunan Provincial Center for Disease Control and Prevention (Hunan Academy of Preventive Medicine), Changsha 410005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Iversen, C., Lehner, A., Mullane, N., Bidlas, E., Cleenwerck, I., Marugg, J., Fanning, S., Stephan, R., and Joosten, H. 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