Stop! The Polio Vaccination Cessation Game
研究了全球根除脊髓灰质炎后各国是否应停止接种疫苗的博弈问题，分析了支持停止接种的条件、所需政策与制度，并粗略估计了收益。
Should polio be eradicated worldwide, countries must decide whether to continue to \nvaccinate with the live-attenuated vaccine, to continue to vaccinate with the alternative, \nkilled vaccine, or to cease vaccinating. To reap a dividend from polio eradication, \ncountries must choose the last option, but vaccination cessation entails interdependent \nrisks as well as rewards. This article models the polio vaccination cessation game, \nderiving the conditions that support vaccination cessation as an equilibrium, describing \nthe policies and institutions needed to steer countries toward this equilibrium, and \npresenting crude quantitative estimates of the gains to supporting this equilibrium.