63097 20250619084222.0 doi 10.1209/0295-5075/110/58006 sideral 100280 ART-2015-100280 eng Gómez-Gardeñes, Jesús Universidad de Zaragoza (orcid)0000-0001-5204-1937 Abrupt transitions from reinfections in social contagions 2015 Access copy available to the general public Unrestricted The study of social contagion processes is of utmost importance for understanding the emergence of collective social states. Here we introduce reinfections in the Susceptible-Infected-Recovered (SIR) model so to incorporate the possibility that an individual that ceases its activity (recovered) can resume it due to secondary infections from its active (infected) peers. We show that, when primary infection is less frequent than secondary ones, a typical situation in many social contagion processes, the epidemic transition turns from smooth to abrupt. As a consequence, macroscopic collective states can be triggered from the inactive (healthy) regime by a small increment of the primary contagion rate. info:eu-repo/grantAgreement/ES/MINECO/FIS2011-25167 info:eu-repo/grantAgreement/ES/MINECO/FIS2012-38266-C02-01 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.963 2015 PHYSICS, MULTIDISCIPLINARY 19 / 78 = 0.244 2015 Q1 T1 0.625 2015 Physics and Astronomy (miscellaneous) 2015 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Barros, Alessandro S. de Pinho, Suani T. R. Andrade, Roberto F. S. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 110, 5 (2015), 58006 [5 pp.] Europhys. lett. Europhysics letters 0295-5075 1517939 http://zaguan.unizar.es/record/63097/files/texto_completo.pdf Postprint 134567 http://zaguan.unizar.es/record/63097/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:63097 articulos driver 2025-06-19-08:41:23 ARTICLE