TY - JOUR
T1 - Resilience of epidemics for SIS model on networks
AU - Lu, Dan
AU - Yang, Shunkun
AU - Zhang, Jiaquan
AU - Wang, Huijuan
AU - Li, Daqing
PY - 2017
Y1 - 2017
N2 - Epidemic propagation on complex networks has been widely investigated, mostly with invariant parameters. However, the process of epidemic propagation is not always constant. Epidemics can be affected by various perturbations and may bounce back to its original state, which is considered resilient. Here, we study the resilience of epidemics on networks, by introducing a different infection rate λ2 during SIS (susceptible-infected-susceptible) epidemic propagation to model perturbations (control state), whereas the infection rate is λ1 in the rest of time. Noticing that when λ1 is below λc, there is no resilience in the SIS model. Through simulations and theoretical analysis, we find that even for λ2 < λc, epidemics eventually could bounce back if the control duration is below a threshold. This critical control time for epidemic resilience, i.e., cdmax, seems to be predicted by the diameter (d) of the underlying network, with the quantitative relation cdmax ~ dα. Our findings can help to design a better mitigation strategy for epidemics.
AB - Epidemic propagation on complex networks has been widely investigated, mostly with invariant parameters. However, the process of epidemic propagation is not always constant. Epidemics can be affected by various perturbations and may bounce back to its original state, which is considered resilient. Here, we study the resilience of epidemics on networks, by introducing a different infection rate λ2 during SIS (susceptible-infected-susceptible) epidemic propagation to model perturbations (control state), whereas the infection rate is λ1 in the rest of time. Noticing that when λ1 is below λc, there is no resilience in the SIS model. Through simulations and theoretical analysis, we find that even for λ2 < λc, epidemics eventually could bounce back if the control duration is below a threshold. This critical control time for epidemic resilience, i.e., cdmax, seems to be predicted by the diameter (d) of the underlying network, with the quantitative relation cdmax ~ dα. Our findings can help to design a better mitigation strategy for epidemics.
UR - http://www.scopus.com/inward/record.url?scp=85027285787&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:34f368c1-ccbe-49f1-8752-33d1813212f4
U2 - 10.1063/1.4997177
DO - 10.1063/1.4997177
M3 - Article
AN - SCOPUS:85027285787
SN - 1054-1500
VL - 27
SP - 1
EP - 6
JO - Chaos: an interdisciplinary journal of nonlinear science
JF - Chaos: an interdisciplinary journal of nonlinear science
IS - 8
M1 - 083105
ER -