RESUMO
This study aims to provide a preliminary estimate of the immediate cost of chikungunya and dengue to household in the Indian state of Gujarat. Combining nine earlier studies and data from interviews, we analysed the costs of non-fatal illness and of intervention programmes; building a more comprehensive picture of the immediate cost of these Aedes aegypti mosquito-borne diseases to Gujarat. The “RUHA matrix” was used to estimate the cost of illness by combining the shares of reported (R) and unreported (U) hospitalized (H) and ambulatory (A) cases of chikungunya and dengue with ambulatory and hospitalization costs per case and the number of reported cases. Using Monte Carlo sensitivity analysis, the immediate cost to households incurred on account of chikungunya and dengue to Gujarat was estimated to be 3.8 (range 1.6–9.1) billion Indian rupees (INR) per annum (US$ 90 million, range US$ 38 and US$ 217 million). It is hoped that this preliminary estimate will trigger more refined studies on cost of illness as well as cost-effectiveness of vaccines and other interventions to combat these neglected tropical diseases.