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

Abstract

BackgroundDengue 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 methodsThis 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”).ResultsThe 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.ConclusionThe WTP rates for DV were high, supporting the introduction of DV in Vietnam.

Using Contingent Valuation Method to Estimate Adults’ Willingness to Pay for a Future Coronavirus 2019 Vaccination

“…Meanwhile, only one-tenth of the study population has sought information relating to the vaccine from community health workers or healthcare staff at hospitals. Our results were consistent with the earlier studies in Vietnam regarding the vaccination of dengue fever, 27 , 28 hepatitis B, 29 and human papillomavirus. 30 These research explored that different types of mass media consisting of social media, the internet, and television were main methods to provide information about Covid-19 vaccine to the Vietnamese general population.…”

“…Additionally, parents were willing to pay US$ 108.70 (type 1) and US$ 195.65 (type 2) for their children’s’ vaccination. 28 These variations may be due to discrepancies in the hypothetical scenarios, data collection, the starting point, and methods of statistical analysis.…”

“…As urban citizens earn a higher monthly income than those live in rural areas, they expressed a greater tendency to pay for dengue vaccine. 28 Another study on WTP for dengue vaccine pointed out that individuals who were male and living in rural regions seem to be willing to pay less in comparison with the remaining groups. 27 Therefore, the government should provide financial aid to enhance the vaccination campaign for poor people, especially for those living in remote areas ( Table 3 ).…”

Acceptance of a COVID-19 Vaccine in Southeast Asia: A Cross-Sectional Study in Indonesia

“…This vaccine development is proceeding at a fast pace; prior to March 30, 2020, two vaccine candidates had entered Phase 1 clinical trials (13) while on April 9, five vaccine candidates in total were in Phase 1 clinical trials (33). In the region of southeast Asia, studies have been conducted to assess the acceptance of a vaccine against infectious diseases (21)(22)(23)(24)(25)(26)34). This present study was conducted to understand how the COVID-19 vaccine, when available, will be accepted by the general population in Indonesia, by asking individuals about a hypothetical vaccine-an approach used in many past studies (21,26,(28)(29)(30).…”

“…Indonesia is a middle-income country with relatively low vaccine coverage and high vaccine hesitancy (18)(19)(20). Some studies have been conducted to assess acceptance on new vaccines against emerging and re-emerging infectious diseases in southeast Asia, such as for dengue (21)(22)(23)(24)(25), Zika (26), and Ebola (27). No study has been conducted on COVID-19 vaccine acceptance in the region.…”