Department of Civil and Environmental Engineering, National University of Singapore, Singapore.
Operations & Decision Sciences, XLRI Xavier School of Management, Jamshedpur, India.
Vaccine. 2022 Apr 1;40(15):2242-2246. doi: 10.1016/j.vaccine.2022.02.077. Epub 2022 Mar 7.
India's mass vaccination efforts have been slow due to high levels of vaccine hesitancy. This study uses data from an online discrete choice experiment with 1371 respondents to rigorously examine the factors shaping vaccine preference in the country. We find that vaccine efficacy, presence of side effects, protection duration, distance to vaccination centre and vaccination rates within social network play a critical role in determining vaccine demand. We apply a non-parametric model to uncover heterogeneity in the effects of these factors. We derive two novel insights from this analysis. First, even though, on average, domestically developed vaccines are preferred, around 30% of the sample favours foreign-developed vaccines. Second, vaccine preference of around 15% of the sample is highly sensitive to the presence of side effects and vaccination uptake among their peer group. These results provide insights for the ongoing policy debate around vaccine adoption in India.
由于高度的疫苗犹豫，印度的大规模疫苗接种工作进展缓慢。本研究使用来自于一项在线离散选择实验的数据，该实验共有 1371 名受访者，旨在严格考察影响该国疫苗接种偏好的因素。我们发现，疫苗效力、副作用的存在、保护持续时间、距离接种中心的距离以及社交网络中的接种率在决定疫苗需求方面起着关键作用。我们应用非参数模型来揭示这些因素影响的异质性。我们从这项分析中得出了两个新的见解。首先，尽管平均而言，国内开发的疫苗更受欢迎，但约 30%的样本偏好外国开发的疫苗。其次，约 15%的样本的疫苗偏好对其同龄人群中副作用的存在和疫苗接种率高度敏感。这些结果为印度正在进行的疫苗接种政策辩论提供了参考。
