{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T16:18:47Z","timestamp":1780503527252,"version":"3.54.1"},"reference-count":11,"publisher":"Georg Thieme Verlag KG","issue":"06","license":[{"start":{"date-parts":[[2024,10,1]],"date-time":"2024-10-01T00:00:00Z","timestamp":1727740800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004359","name":"Vetenskapsr\u00e5det","doi-asserted-by":"crossref","award":["2019-05909"],"award-info":[{"award-number":["2019-05909"]}],"id":[{"id":"10.13039\/501100004359","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100014688","name":"Region Uppsala","doi-asserted-by":"crossref","award":["ALF 810901"],"award-info":[{"award-number":["ALF 810901"]}],"id":[{"id":"10.13039\/501100014688","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100002706","name":"AFA F\u00f6rs\u00e4kring","doi-asserted-by":"crossref","award":["150411"],"award-info":[{"award-number":["150411"]}],"id":[{"id":"10.13039\/501100002706","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The aim of the study was to investigate the virulence factors in Escherichia coli producing extended-spectrum \u03b2-lactamase (ESBL) derived from the perinatal fecal colonization flora of mothers and their newborns in a Chinese obstetric ward.<\/jats:p><jats:p>Rectal swabs were obtained from mothers prenatally and from their newborns postnatally, and analyzed for ESBL-producing Escherichia coli. The isolates were then whole-genome sequenced.<\/jats:p><jats:p>Maternal and neonatal colonization by ESBL-producing E. coli in a Chinese obstetric ward was 18% (31\/177) and 5% (9\/170), respectively. Fecal ESBL-producing isolates exhibited a significantly lower frequency of virulence factors compared with invasive E. coli.<\/jats:p><jats:p>Providing balanced information on screening results is essential, along with conducting a risk assessment for antibiotic treatment strategies.<\/jats:p>","DOI":"10.1055\/a-2427-9065","type":"journal-article","created":{"date-parts":[[2024,10,2]],"date-time":"2024-10-02T00:06:29Z","timestamp":1727827589000},"page":"822-826","source":"Crossref","is-referenced-by-count":1,"title":["Virulence Potential of ESBL-Producing Escherichia coli Isolated during the Perinatal Period"],"prefix":"10.1055","volume":"42","author":[{"given":"Hong","family":"Yin","sequence":"additional","affiliation":[{"name":"Department of Clinical Microbiology, Link\u00f6ping University Hospital, Link\u00f6ping, Sweden"},{"name":"Department of Clinical Microbiology, Falu Hospital, Falun, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vilma","family":"Blomberg","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's Health, Paediatric Inflammation, Metabolism and Child Health Research, Uppsala University, Uppsala, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liwei","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Changchun Children's Hospital, Changchun City, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ChunXia","family":"Yin","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Changchun City Hospital, Changchun City, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5765-8597","authenticated-orcid":false,"given":"Susanne","family":"S\u00fctterlin","sequence":"additional","affiliation":[{"name":"Department of Women's and Children's 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