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The study of epidemic spreading on a mobile multi-agent system with infective expressivity and its control strategy

We study epidemic dynamics of a mobile multi-agent system based on Vicsek model, where a mobile agent contacts with his spatial neighbours with the susceptible-infected-susceptible (SIS) epidemic mechanism. We introduce the expressivity to infected agents, which is the probability that infected agents announce their infective states to other agents in the system. We study the effects of expressivity of infected agents on epidemic spreading, and propose a control strategy that each moving susceptible agent avoids the infected agents. The numerical simulation shows that the strategy can improve the epidemic threshold, which is therefore valid for epidemic control.