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Customers' preferences and willingness to pay for a future dengue vaccination: a study of the empirical evidence in Vietnam

Authors Vo TQ, Tran QV, Vo NX

Received 24 September 2018

Accepted for publication 30 October 2018

Published 27 November 2018 Volume 2018:12 Pages 2507—2515

DOI https://doi.org/10.2147/PPA.S188581

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Dr Johnny Chen


Trung Quang Vo,1,* Quang Vinh Tran,1,* Nam Xuan Vo2

1Department of Pharmacy Administration, Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam; 2Department of Social, Economic and Administrative Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand

*These authors contributed equally to this work

Background: Dengue was endemic to Vietnam. Due to the lack of a readily available remedy, dengue vaccines (DV) have been used elsewhere to cure the disease. However, introducing DV in Vietnam has met resistance from society and the government, influencing decisions about willingness-to-pay (WTP) and other pharmacoeconomic studies. This research aimed to evaluate the extent to which Vietnamese customers would be willing to pay to vaccinate themselves and their children, if any at all, against dengue.
Materials and methods: This was a cross-sectional interview-based research. Contingent valuation method, combined with the bidding technique and several open-ended questions, were used to obtain the maximum WTP values for six hypothetical scenarios of two types of DV (60% efficacy for 10 years, “Type 1” vs 90% efficacy for 20 years, “Type 2”).
Results: The median WTP per adult for Type 1 and Type 2 DV were US$130.34 and US$217.39, respectively. The median WTP rates per parent for their own vaccination were US$86.96 (Type 1) and US$156.52 (Type 2), for their children vaccination costs were US$108.70 (Type 1) and US$195.65 (Type 2). Five factors affected the WTP rates: monthly income, marital status, area, locality and level of education.
Conclusion: The WTP rates for DV were high, supporting the introduction of DV in Vietnam.

Keywords: customer, dengue fever, dengue vaccine, Vietnam, willingness to pay (WTP)

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