Should the family size be used in COVID-19 vaccine prioritization strategy to prevent variants diffusion? A first investigation using a basic ABM

This article investigates if considering family size among the vaccine prioritization strategy can have a role using an Agent-based model. Simulations show mixed results: the random-based vaccination strategy outperforms the family-based one for some parameters combinations while the reverse holds for others. In particular, the random-based tends to dominate the family-based strategy in the case of larger families and low and high vaccination levels. The opposite is true with smaller families at the same vaccination levels. The intermediate level of vaccination provides exceptions. the family-based vaccination strategy stops the diffusion of a new wave or variant with a significant probability for smaller average family size and low and high vaccination levels (bottom-left and top-left charts) and for large average family size and middle level of vaccination