{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T15:02:24Z","timestamp":1785423744867,"version":"3.56.0"},"reference-count":15,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T00:00:00Z","timestamp":1779148800000},"content-version":"unspecified","delay-in-days":138,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Epidemiol. Infect."],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    National foodborne outbreaks of gastrointestinal disease often require rapid case\u2013control investigations to identify the source. Online market panels offer a potential alternative to traditional control recruitment. We compared market panel controls to traditional controls in case\u2013control recruitment during a 2024 UK outbreak of STEC O145. Two case\u2013control studies were conducted for two different control groups (a)\n                    <jats:italic>Salmonella<\/jats:italic>\n                    cases as case\u2013controls and (b) online market panel members. Timeliness, cost, and resources were compared, and a logistic regression compared findings in a control\u2013control analysis. In total, 43 cases of STEC O145, 63\n                    <jats:italic>Salmonella<\/jats:italic>\n                    case\u2013controls, and 93 panel controls were recruited. Neither control group reached the recruitment target for the younger adult age group.\n                    <jats:italic>Salmonella<\/jats:italic>\n                    case\u2013controls had a ninefold greater staff time to recruit and cost five times more than panel controls (\u00a325.82 vs. \u00a34.99 per control), partially due to interviewer-administered questionnaires compared with self-completion by panel controls. Both analytical approaches identified the same outbreak source, with no significant differences in exposures between the control groups. The cost and resource savings associated with panel controls justify their use as a standard procedure in outbreak investigations. We recommend exploring engagement with age groups that are difficult to recruit and assessing alternative strategies to reach them.\n                  <\/jats:p>","DOI":"10.1017\/s0950268826101599","type":"journal-article","created":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T05:57:40Z","timestamp":1779170260000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["A comparison of using online market panel members and traditional methods in control recruitment for a case\u2013control study during a national outbreak of STEC O145, United Kingdom"],"prefix":"10.1017","volume":"154","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-1181-9499","authenticated-orcid":false,"given":"Grace","family":"King","sequence":"first","affiliation":[{"name":"UK Health Security Agency"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carys","family":"Rees","sequence":"additional","affiliation":[{"name":"UK Health 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Greencore Group recalls sandwiches, wraps and salads because of possible contamination with E. coli 2024 [updated 14\/06\/2024]. https:\/\/www.food.gov.uk\/news-alerts\/alert\/fsa-prin-30-2024."},{"key":"S0950268826101599_r8","doi-asserted-by":"publisher","DOI":"10.1017\/S0950268815002290"},{"key":"S0950268826101599_r11","doi-asserted-by":"publisher","DOI":"10.1017\/S0950268824001523"},{"key":"S0950268826101599_r2","doi-asserted-by":"publisher","DOI":"10.1017\/S0950268817002874"},{"key":"S0950268826101599_r1","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2015-009933"}],"container-title":["Epidemiology and Infection"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0950268826101599","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T07:09:47Z","timestamp":1784272187000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0950268826101599\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":15,"alternative-id":["S0950268826101599"],"URL":"https:\/\/doi.org\/10.1017\/s0950268826101599","relation":{},"ISSN":["0950-2688","1469-4409"],"issn-type":[{"value":"0950-2688","type":"print"},{"value":"1469-4409","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026]]},"assertion":[{"value":"\u00a9 Crown Copyright - UK Health Security Agency, 2026. Published by Cambridge University Press","name":"copyright","label":"Copyright","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http:\/\/creativecommons.org\/licenses\/by\/4.0), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.","name":"license","label":"License","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}},{"value":"This content has been made available to all.","name":"free","label":"Free to read"}],"article-number":"e77"}}