ABSTRACT

Background: Chikungunya fever is an important infectious disease transmitted by the bite of the mosquitoes. Information about consumers’ willingness to pay (WTP) for a hypothetical vaccine can help with future discussions about its possible price. Methods: A cross-sectional study conducted among residents of Minas Gerais, Brazil, regarding their WTP for a hypothetical chikungunya vaccine defined by the authors as having a mean effective protection of 80%. Results: We interviewed 496 individuals. Among these, 23 were excluded from the analysis. Most of the respondents were female (57.3%), had completed at least high school (90.7%), were employed (87.7%) and had private health insurance (62.6%). The median value of the WTP was US$ 31.17 (120.00 BRL) for a unique dose vaccine. The WTP showed a statistical significant correlation with monthly family income and access to private health insurance. Conclusion: This study can contribute to decision-making about potential prices for a chikungunya vaccine once it becomes available in Brazil. We demonstrated the relevance of the anchoring effect as a possible influence applied to the maximum value of the WTP associated with respondents’ preference for a new vaccine. Finally, we encourage the development of a chikungunya virus vaccine to benefit the Brazilian population.

摘要

背景：基孔肯雅热是一种由蚊虫叮咬传播的重要传染病。有关消费者对假设疫苗的支付意愿 (WTP) 的信息可以帮助未来讨论其可能的价格。方法：在巴西米纳斯吉拉斯州的居民中进行了一项横断面研究，研究他们对一种假设的基孔肯雅热疫苗的 WTP，作者将其定义为平均有效保护率为 80%。结果：我们采访了 496 人。其中，23 人被排除在分析之外。大多数受访者是女性（57.3%），至少完成了高中（90.7%），有工作（87.7%）并拥有私人医疗保险（62.6%）。单剂量疫苗的 WTP 中值为 31.17 美元（120.00 巴西雷亚尔）。WTP 显示出与每月家庭收入和获得私人医疗保险的显着相关性。结论：一旦基孔肯雅热疫苗在巴西上市，这项研究有助于制定基孔肯雅热疫苗的潜在价格。我们证明了锚定效应的相关性，它可能影响与受访者对新疫苗的偏好相关的 WTP 最大值。最后，我们鼓励开发基孔肯雅病毒疫苗以造福巴西人民。我们证明了锚定效应的相关性，它可能影响与受访者对新疫苗的偏好相关的 WTP 最大值。最后，我们鼓励开发基孔肯雅病毒疫苗以造福巴西人民。我们证明了锚定效应的相关性，它可能影响与受访者对新疫苗的偏好相关的 WTP 最大值。最后，我们鼓励开发基孔肯雅病毒疫苗以造福巴西人民。