Fighting Ebola

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An analysis of the ongoing Ebola outbreak reveals that transmission of the virus occurs in social networks. Usually a social network is represented as an undirected graph G = (V, E), where V denotes the set of nodes and E denotes the set of edges. Each node in the graph is assigned an integer weight for it. At time t = 0, all the nodes of the graph are vulnerable. Node S of the graph has just be

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