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Feasibility and willingness to pay for dengue vaccine in the threat of dengue fever outbreaks in Vietnam

机译：在越南爆发登革热的威胁中，购买登革热疫苗的可行性和意愿

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Background: The escalation of dengue fever (DF) cases in recent years and the occurrence of a large-scale DF outbreak in 2017 underline the importance of dengue vaccines in Vietnam. Given the potential benefits of the dengue vaccines and the need for copayment by the private sector, this study aims to evaluate the willingness to pay (WTP) for the dengue vaccines in patients with DF in Northern Vietnam. Methods: A cross-sectional study was conducted on 330 in-and-out patients with DF admitted to the Bach Mai Hospital. We used the contingent valuation method to evaluate the WTP for dengue vaccines. Socioeconomic and clinical characteristics were also investigated. Multivariate interval and logistic regression models were used to estimate the average amount of WTP and identify the factors associated with the WTP. Results: Around 77.3% patients were willing to pay an average amount of US$ 67.4 (95% CI=57.4–77.4) for the vaccine. People of higher ages, those having health insurance, those traveling in the past 15 days or suffering from anxiety/depression were less likely to be willing to pay for the dengue vaccine. However, people having a longer duration of DF or having problems with mobility were positively associated with WTP for the dengue vaccine. Patients educated to more than high school levels (Coeff.=31.31; 95% CI=3.26–59.35), those in the richest quintile (Coeff.=62.76; 95% CI=25.40; 100.13), or those having a longer duration of the disease (Coeff.=6.18; 95% CI=0.72–11.63) were willing to pay a higher amount. Conclusion: This study highlights a relatively high rate and amount of WTP for the dengue vaccine among patients with DF. Psychological counseling services as well as educational campaigns should be undertaken to improve the WTP for the vaccine. Moreover, government subsidies should be given to increase the coverage of the vaccine in the future, especially for the poor.
机译：背景：近年来，登革热（DF）病例的升级以及2017年大规模DF暴发的发生凸显了越南登革热疫苗的重要性。考虑到登革热疫苗的潜在好处以及私营部门需要自付的必要性，本研究旨在评估越南北部患有DF的患者登革热疫苗的支付意愿（WTP）。方法：一项横断面研究对330例入入巴赫迈医院的进出DF患者进行。我们使用或有估值方法来评估登革热疫苗的WTP。还调查了社会经济和临床特征。使用多元区间和逻辑回归模型来估计WTP的平均数量，并确定与WTP相关的因素。结果：大约77.3％的患者愿意为该疫苗平均支付67.4美元（95％CI = 57.4-77.4）。较高年龄的人，有健康保险的人，过去15天内旅行的人或患有焦虑症/抑郁症的人不太愿意为登革热疫苗付费。但是，DF持续时间较长或行动不便的人与登革热疫苗的WTP呈正相关。受教育程度高于高中水平的患者（Coeff。= 31.31; 95％CI = 3.26-59.35），那些处于最富有的五分之一（Coeff。= 62.76; 95％CI = 25.40; 100.13）或持续时间更长的患者该疾病（Coeff。= 6.18; 95％CI = 0.72-11.63）愿意支付更高的费用。结论：这项研究强调了DF患者中登革热疫苗的WTP率和数量相对较高。应进行心理咨询服务和教育运动，以提高疫苗的WTP。此外，应给予政府补贴，以扩大疫苗的覆盖面，尤其是对穷人而言。

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