. The benchmark version of the model is speciÖed using county-level áu vaccination claims rates from California. Then …, holding overall vaccination levels constant, we change the variance in the distribution of regional vac- cine coverage. The … mean size of the global epidemics increases as the variance in regional vaccination rates increases. This relationship …

This paper analyses the private provision of public goods where agents interact within a fixed network structure and … the concept of k-insulated set, any network supports a Nash equilibrium with no intermediate contributors. …