{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T17:54:21Z","timestamp":1775152461390,"version":"3.50.1"},"reference-count":44,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2011,11,6]],"date-time":"2011-11-06T00:00:00Z","timestamp":1320537600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Risk Analysis"],"published-print":{"date-parts":[[2012,7]]},"abstract":"<jats:p><jats:italic>Listeria monocytogenes<\/jats:italic>\u2002is among the foodborne pathogens with the highest death toll in the United States. Ready\u2010to\u2010eat foods contaminated at retail are an important source of infection. Environmental sites in retail deli operations can be contaminated. However, commonly contaminated sites are unlikely to come into direct contact with food and the public health relevance of environmental contamination has remained unclear. To identify environmental sites that may pose a considerable cross\u2010contamination risk, to elucidate potential transmission pathways, and to identify knowledge gaps, we performed a structured expert elicitation of 41 experts from state regulatory agencies and the food retail industry with practical experience in retail deli operations. Following the \u201cDelphi\u201d method, the elicitation was performed in three consecutive steps: questionnaire, review and discussion of results, second questionnaire. Hands and gloves were identified as important potential contamination sources. However, bacterial transfers to and from hands or gloves represented a major data gap. Experts agreed about transfer probabilities from cutting boards, scales, deli cases, and deli preparation sinks to product, and about transfer probabilities from floor drains, walk\u2010in cooler floors, and knife racks to food contact surfaces. Comparison of experts' opinions to observational data revealed a tendency among experts with certain demographic characteristics and professional opinions to overestimate prevalence. Experts\u2019 votes clearly clustered into separate groups not defined by place of employment, even though industry experts may have been somewhat overrepresented in one cluster. Overall, our study demonstrates the value and caveats of expert elicitation to identify data gaps and prioritize research efforts.<\/jats:p>","DOI":"10.1111\/j.1539-6924.2011.01729.x","type":"journal-article","created":{"date-parts":[[2011,11,6]],"date-time":"2011-11-06T19:15:32Z","timestamp":1320606932000},"page":"1139-1156","source":"Crossref","is-referenced-by-count":27,"title":["Structured Expert Elicitation About\u2002<i>Listeria monocytogenes<\/i>\u2002Cross\u2010Contamination in the Environment of Retail Deli Operations in the United States"],"prefix":"10.1111","volume":"32","author":[{"given":"Karin","family":"Hoelzer","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haley F.","family":"Oliver","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Larry R.","family":"Kohl","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jill","family":"Hollingsworth","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin T.","family":"Wells","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Wiedmann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,11,6]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.3201\/eid1701.P11101"},{"key":"e_1_2_7_3_2","volume-title":"Quantitative assessment of the relative risk to public health from foodborne\u2002Listeria monocytogenes\u2002among selected categories of ready\u2010to\u2010eat (RTE) foods","author":"Food and Drug Administration (FDA)","year":"2003"},{"issue":"4","key":"e_1_2_7_4_2","doi-asserted-by":"crossref","first-page":"612","DOI":"10.4315\/0362-028X-73.4.612","article-title":"A comparative risk assessment for\u2002Listeria monocytogenes\u2002in prepackaged versus retail\u2010sliced deli meat","volume":"73","author":"Endrikat S","year":"2011","journal-title":"Journal of Food Protection"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.4315\/0362-028X-72.11.2337"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.4315\/0362-028X.JFP-10-567"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.4315\/0362-028X-73.10.1849"},{"key":"e_1_2_7_8_2","unstructured":"Anonymous. 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