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Title: A multi-country study of the household willingness-to-pay for dengue vaccines: Household surveys in Vietnam, Thailand, and Colombia
Authors: Jung Seok Lee
Vittal Mogasale
Jacqueline K. Lim
Mabel Carabali
Chukiat Sirivichayakul
Dang Duc Anh
Kang Sung Lee
Vu Dinh Thiem
Kriengsak Limkittikul
Le Huu Tho
Ivan D. Velez
Jorge E. Osorio
Pornthep Chanthavanich
Luiz J. da Silva
Brian A. Maskery
International Vaccine Institute, Seoul
Mahidol University
National Institute of Hygiene and Epidemiology
University of Khanh Hoa
Universidad de Antioquia
University of Wisconsin Madison
Keywords: Medicine
Issue Date: 1-Jun-2015
Citation: PLoS Neglected Tropical Diseases. Vol.9, No.6 (2015)
Abstract: © 2015 Lee et al. Background The rise in dengue fever cases and the absence of dengue vaccines will likely cause governments to consider various types of effective means for controlling the disease. Given strong public interests in potential dengue vaccines, it is essential to understand the private economic benefits of dengue vaccines for accelerated introduction of vaccines into the public sector program and private markets of high-risk countries. Methodology/Principal Findings 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. Conclusions/Significance Knowing that dengue vaccines are not yet available, our study provides critical information to both public and private sectors. The study results can be used to ensure broad coverage with an affordable price and incorporated into cost benefit analyses, which can inform prioritization of alternative health interventions at the national level.
ISSN: 19352735
Appears in Collections:Scopus 2011-2015

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