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BACKGROUND: Disease incidence data are needed to guide decision-making for public health interventions. Although dengue is a reportable disease in Thailand and Cambodia, the degree that reported incidence underrecognizes true disease burden is unknown. We utilized dengue incidence calculated from laboratory-confirmed outpatient and inpatient cases in prospective cohort studies to estimate the magnitude of dengue underrecognition and to establish more accurate disease burden estimates for these countries. METHODS AND FINDINGS: Cohort studies were conducted among children aged 95,000 children in Thailand and >58,000 children in Cambodia were estimated to be hospitalized due to dengue. CONCLUSION: Calculating MFs by comparing prospective cohort study data to locally-reported national surveillance data is one approach to more accurately assess disease burden. These data indicate that although dengue is regularly reported in many countries, national surveillance data significantly underrecognize the true burden of disease.
Wichmann et al. (Tue,) studied this question.