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Under-recognition and reporting of dengue in Cambodia: a capture-recapture analysis of the National Dengue Surveillance System.

Abstract : Robust disease burden estimates are important for decision-making concerning introduction of new vaccines. Dengue is a major public health problem in the tropics but robust disease burden estimates are lacking. We conducted a two-sample, capture-recapture study in the largest province in Cambodia to determine disease under-recognition to the National Dengue Surveillance System (NDSS). During 2006-2008, community-based active surveillance for acute febrile illness was conducted in 0- to 19-year-olds in rural and urban areas combined with testing for dengue virus infection. Of 14 354 individuals under active surveillance (22 498 person-seasons), the annual incidence ranged from 13*4 to 57*8/1000 person-seasons. During the same period, NDSS incidence rates ranged from 1*1/1000 to 5*7/1000, which was 3*9- to 29*0-fold lower than found in the capture-recapture study. In hospitalized cases, the rate of under-recognition was 1*1- to 2*4-fold. This study shows the substantial degree of under-recognition/reporting of dengue and that reported hospitalized cases are not a good surrogate for estimating dengue disease burden.
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Submitted on : Friday, March 29, 2013 - 3:20:28 AM
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S. Vong, S. Goyet, S. Ly, C. Ngan, R. Huy, et al.. Under-recognition and reporting of dengue in Cambodia: a capture-recapture analysis of the National Dengue Surveillance System.. Epidemiology and Infection, Cambridge University Press (CUP), 2012, 140 (3), pp.491-9. ⟨10.1017/S0950268811001191⟩. ⟨pasteur-00805811⟩

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