A contingent valuation study for a hypothetical dengue vaccine was administered to 400
households in a multi-country setting: Vietnam, Thailand, and Colombia. All respondents received
a description of the hypothetical dengue vaccine scenarios of 70% or 95% effectiveness
for 10 or 30 years with a three dose series. Five price points were determined after
pilot tests in order to reflect different local situations such as household income levels and
general perceptions towards dengue fever. We adopted either Poisson or negative binomial
regression models to calculate average willingness-to-pay (WTP), as well as median WTP.
We found that there is a significant demand for dengue vaccines. The parametric median
WTP is $26.4 ($8.8 per dose) in Vietnam, $70.3 ($23.4 per dose) in Thailand, and $23 ($7.7
per dose) in Colombia. Our study also suggests that respondents place more value on vaccinating
young children than school age children and adults