{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T21:27:09Z","timestamp":1788470829032,"version":"build-2803163510"},"reference-count":21,"publisher":"American Society for Microbiology","issue":"9","license":[{"start":{"date-parts":[[2012,9,1]],"date-time":"2012-09-01T00:00:00Z","timestamp":1346457600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Clin Microbiol"],"published-print":{"date-parts":[[2012,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Noroviruses (NoVs) have emerged as the leading cause of acute viral gastroenteritis (GE) in humans. Although diagnostic facilities have greatly improved, significant underdiagnosis of NoV in hospitals may still occur, thereby increasing clinical burden and nosocomial spread. We evaluated the underdiagnosis of sporadic NoV infections in a tertiary care hospital and estimated its clinical impact. From December 2008 until July 2009, fecal samples specifically referred for bacterial but not viral examination were retrospectively tested for NoV by real-time PCR. The clinical and virological data from patients with undiagnosed NoV infection (missed patients) were evaluated and compared with those from patients with recognized NoV. During the study period, 45 patients with undiagnosed NoV were detected, whereas 50 patients were regularly diagnosed. The missed NoV cases were more frequently adults than children (80% versus 46%;\n            <jats:italic>P<\/jats:italic>\n            &lt; 0.001). The viral load levels did not differ between the diagnosed and missed patients, but missed patients more frequently presented without diarrhea (20% versus 4%;\n            <jats:italic>P<\/jats:italic>\n            &lt; 0.07). The newly admitted missed NoV cases with GE underwent more diagnostic imaging (24% versus 4%;\n            <jats:italic>P<\/jats:italic>\n            &lt; 0.01) and tended to be hospitalized longer. When missed-NoV patients were included, the number of nosocomial clusters doubled and missed patients were index cases in 5 of the 6 clusters. These data indicate that NoV infections are frequently missed despite routine laboratory testing and demonstrate that underdiagnosis of NoV patients is associated with costly abdominal imaging and nosocomial clustering. Awareness of NoV infection in adult patients and education about the importance of viral GE should be increased.\n          <\/jats:p>","DOI":"10.1128\/jcm.00908-12","type":"journal-article","created":{"date-parts":[[2012,7,12]],"date-time":"2012-07-12T02:57:21Z","timestamp":1342061841000},"page":"3040-3045","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":35,"title":["Unrecognized Norovirus Infections in Health Care Institutions and Their Clinical Impact"],"prefix":"10.1128","volume":"50","author":[{"given":"Matthias F. C.","family":"Beersma","sequence":"first","affiliation":[{"name":"Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Faizel H. A.","family":"Sukhrie","sequence":"additional","affiliation":[{"name":"Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"},{"name":"Municipal Health Service, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jolanda","family":"Bogerman","sequence":"additional","affiliation":[{"name":"Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"},{"name":"Municipal Health Service, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linda","family":"Verhoef","sequence":"additional","affiliation":[{"name":"National Institute for Public Health and the Environment, Center for Infectious Disease Control, Laboratory for Infectious Diseases and Perinatal Screening, Bilthoven, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana","family":"Mde Melo","sequence":"additional","affiliation":[{"name":"Harbor Hospital and Institute for Tropical Diseases, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alieke G.","family":"Vonk","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marion","family":"Koopmans","sequence":"additional","affiliation":[{"name":"Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands"},{"name":"National Institute for Public Health and the Environment, Center for Infectious Disease Control, Laboratory for Infectious Diseases and Perinatal Screening, Bilthoven, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10096-007-0290-8"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhin.2008.11.018"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/CCM.0b013e3181e69f05"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1093\/infdis\/jis206"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1086\/658330"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10096-011-1518-1"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1017\/S095026880900274X"},{"key":"e_1_3_2_9_2","first-page":"1381","article-title":"Incidence of acute gastroenteritis and role of norovirus, Georgia, U.S.A. 2004\u20132005","volume":"17","author":"Hall AJ","year":"2011","unstructured":"HallAJ. 2011. Incidence of acute gastroenteritis and role of norovirus, Georgia, U.S.A. 2004\u20132005. Emerg. Infect. Dis. 17:1381\u20131388.","journal-title":"Emerg. Infect. 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