{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T09:34:20Z","timestamp":1791192860698,"version":"4.1.0"},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2005,12,1]],"date-time":"2005-12-01T00:00:00Z","timestamp":1133395200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Epidemiol. Infect."],"published-print":{"date-parts":[[2006,8]]},"abstract":"<jats:p>We used molecular subtyping to investigate an outbreak of listeriosis involving residents of 24 US states. We defined a case as infection with <jats:italic>Listeria monocytogenes<\/jats:italic> serotype 4b yielding one of several closely related patterns when subtyped by pulsed-field gel electrophoresis. Patients infected with strains yielding different patterns were used as controls. A total of 108 cases were identified with 14 associated deaths and four miscarriages or stillbirths. A case-control study implicated meat frankfurters as the likely source of infection (OR 17\u00b73, 95% CI 2\u00b74\u2013160). The outbreak ended abruptly following a manufacturer-issued recall, and the outbreak strain was later detected in low levels in the recalled product. A second strain was recovered at higher levels but was not associated with human illness. Our findings suggest that <jats:italic>L. monocytogenes<\/jats:italic> strains vary widely in virulence and confirm that large outbreaks can occur even when only low levels of contamination are detected in sampled food. Standardized molecular subtyping and coordinated, multi-jurisdiction investigations can greatly facilitate detection and control of listeriosis outbreaks.<\/jats:p>","DOI":"10.1017\/s0950268805005376","type":"journal-article","created":{"date-parts":[[2005,12,1]],"date-time":"2005-12-01T11:56:49Z","timestamp":1133438209000},"page":"744-751","source":"Crossref","is-referenced-by-count":166,"title":["Nationwide outbreak of listeriosis due to contaminated meat"],"prefix":"10.1017","volume":"134","author":[{"given":"P. S.","family":"MEAD","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E. 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