A game theoretic approach identifies conditions that foster vaccine-rich to vaccine-poor country donation of surplus vaccines.
This article by Lampert, A., Sulitzeanu-Kenan, R., Vanhuysse, P, Tepe, M. develops a new game, the ‘Rich-to-Poor Vaccine Donation Game,’ and shows that there are hard foundations for modest hope about pandemic cooperation. There is a narrow corridor of conditions under which it is both optimal and stable strategy for the rich world to donate surplus vaccines to the poor world.