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Accuracy of diagnostic tests for Schistosoma mansoni infection in asymptomatic Eritrean refugees: serology and POC-CCA against stool microscopy

Chernet, Afona and Kling, Kerstin and Sydow, Véronique and Kuenzli, Esther and Hatz, Christoph and Utzinger, Jürg and van Lieshout, Lisette and Marti, Hanspeter and Nickel, Beatrice and Labhardt, Niklaus D. and Neumayr, Andreas. (2017) Accuracy of diagnostic tests for Schistosoma mansoni infection in asymptomatic Eritrean refugees: serology and POC-CCA against stool microscopy. Clinical Infectious Diseases, 65 (4). pp. 568-574.

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Official URL: http://edoc.unibas.ch/57733/

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Abstract

The unprecedented increase in number of African refugees arriving in Europe is confronting clinicians and general practitioners with the question of whether or not and how to screen migrants from endemic regions for Schistosoma mansoni infection.; We assessed the accuracy of 3 different diagnostic tests for S. mansoni infection (stool microscopy [samples prepared by sedimentation technique], serology, and point-of-care circulating cathodic antigen [POC-CCA] urine cassette test) in 107 newly arrived asymptomatic Eritrean refugees in Switzerland.; Sixty-three study participants (59%) tested positive by at least 1 of the 3 methods. Thirty-seven participants (35%) were considered to have active schistosomiasis, either due to the detection of parasite eggs in stool and/or the presence of a concordant positive serology and urine POC-CCA test, which we consider to be a suitable surrogate marker of active infection. Of 23 microscopy-positive participants, 22 were positive by serology (95.7% sensitivity) and 21 were positive by the urine POC-CCA test (91.3% sensitivity). The combination of serology and urine POC-CCA testing detected all 23 microscopy-positive study participants (100% sensitivity).; With a sensitivity of 100% (95% confidence interval, 82.2%-100%), the combination of serology plus urine POC-CCA testing appears to be the most sensitive screening option for asymptomatic S. mansoni infection in Eritrean refugees, compared with stool sedimentation microscopy.
Faculties and Departments:03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin > Medicines Development (Paris)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medicine (MED) > Medicines Development (Paris)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
UniBasel Contributors:Chernet, Afona and Kling, Kerstin and Sydow, Véronique and Hatz, Christoph and Utzinger, Jürg and Marti, Hanspeter and Neumayr, Andreas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Oxford University Press
ISSN:1058-4838
e-ISSN:1537-6591
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:21 Dec 2017 14:44
Deposited On:21 Dec 2017 14:44

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