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***** To join INSNA, visit http://www.insna.org ***** Hi, I would agree with everything that's already been said. If you haven't already found them, I'm aware of at least two papers that have tried to look at polio transmission on networks. A big limitation is the lack of empirical data on the structure of relevant networks. K Jong-Hoon & R Seong-Hwan, Transmission dynamics of oral polio vaccine viruses and vaccine-derived polioviruses on networks, Journal of Theoretical Biology, v 364, pp. 266-274, 2015. http://dx.doi.org/10.1016/j.jtbi.2014.09.026. H Rahmandad et al., Development of an individual-based model for polioviruses: implications of the selection of network type and outcome metrics, Epidemiology and Infection, v 139, pp. 836-848, 2011. http://dx.doi.org/10.1017/S0950268810001676 My own view is that there are at least two different network angles here. One is an epidemiological view that focuses on transmission. Transmission through social networks would be one part of that, and “ring vaccination” would be a common strategy response. Most of the work I’ve seen on “ring vaccination” was around person-person transmission. Where transmission is by the oral-faecal route other strategies could be considered. It might even be that a person-place bipartite network offers some insight if certain unsanitary places are the sources of most infections. The second network angle is driven by increasing uptake of the vaccine. Perhaps vaccinating key people or finding people to be advocates of vaccination will lead others to do it too. Then the key is to understand who trusts whom or who is influenced by whom to maximize the effectiveness of the strategy. To me, this requires a deeper understanding of the social structure of the area. Either way, a big challenge would be lack of data. _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.