+1 Recommend
0 collections
      • Record: found
      • Abstract: found
      • Article: not found

      Interacting opinion and disease dynamics in multiplex networks: Discontinuous phase transition and nonmonotonic consensus times

      Physical Review. E
      American Physical Society

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          Opinion formation and disease spreading are among the most studied dynamical processes on complex networks. In real societies, it is expected that these two processes depend on and affect each other. However, little is known about the effects of opinion dynamics over disease dynamics and vice versa, since most studies treat them separately. In this work we study the dynamics of the voter model for opinion formation intertwined with that of the contact process for disease spreading, in a population of agents that interact via two types of connections, social and contact. These two interacting dynamics take place on two layers of networks, coupled through a fraction q of links present in both networks. The probability that an agent updates its state depends on both the opinion and disease states of the interacting partner. We find that the opinion dynamics has striking consequences on the statistical properties of disease spreading. The most important is that the smooth (continuous) transition from a healthy to an endemic phase observed in the contact process, as the infection probability increases beyond a threshold, becomes abrupt (discontinuous) in the two-layer system. Therefore, disregarding the effects of social dynamics on epidemics propagation may lead to a misestimation of the real magnitude of the spreading. Also, an endemic-healthy discontinuous transition is found when the coupling q overcomes a threshold value. Furthermore, we show that the disease dynamics delays the opinion consensus, leading to a consensus time that varies nonmonotonically with q in a large range of the model's parameters. A mean-field approach reveals that the coupled dynamics of opinions and disease can be approximately described by the dynamics of the voter model decoupled from that of the contact process, with effective probabilities of opinion and disease transmission.

          Related collections

          Author and article information

          Phys Rev E
          Phys Rev E
          Physical Review. E
          American Physical Society
          May 2017
          22 May 2017
          22 May 2017
          : 95
          : 5
          : 052315
          IFLYSIB, Instituto de Física de Líquidos y Sistemas Biológicos (UNLP-CONICET) , 1900 La Plata, Argentina
          Author notes

          Corresponding author: fede.vazmin@gmail.com

          ©2017 American Physical Society

          This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

          : 3 December 2016
          : 30 March 2017
          Page count
          Pages: 20
          Funded by: Consejo Nacional de Investigaciones Científicas y Técnicas http://dx.doi.org/10.13039/501100002923 National Scientific and Technical Research Council CONICET http://sws.geonames.org/3865483/
          Award ID: PIP 0443/2014
          Networks and Complex Systems


          Comment on this article