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Rescue of endemic states in interconnected networks with adaptive coupling
F Vazquez1,2, M Ángeles Serrano3,4, M San Miguel2
1IFLYSIB, Instituto de Física de Líquidos y Sistemas Biológicos (UNLP-CONICET), 1900 La Plata, Argentina.
Scientific Reports
|July 7, 2016
Summary
Adaptive rewiring of network links can prevent epidemic spreading. This study shows rewiring can decouple networks, halting disease transmission and protecting populations from epidemics.
Area of Science:
- Epidemiology
- Network Science
- Computational Biology
Background:
- Epidemic spreading models are crucial for understanding disease transmission.
- Interconnected networks present complex dynamics for disease propagation.
- Adaptive link rewiring offers a potential mechanism to control epidemics.
Purpose of the Study:
- To investigate the impact of adaptive link rewiring on epidemic spreading in a Susceptible-Infected-Susceptible (SIS) model on two interconnected networks.
- To analyze how rewiring affects disease transmission dynamics and network decoupling.
- To identify conditions under which rewiring can transition an epidemic from an endemic to a healthy state.
Main Methods:
- Simulations of the Susceptible-Infected-Susceptible (SIS) model on a two-layer network.
- Implementation of adaptive link rewiring to avoid susceptible-infected contacts between layers.
- Analysis of epidemic prevalence, effective connectivity, and phase transitions under varying rewiring rates.
Main Results:
- Rewiring reduces interlayer connectivity, potentially decoupling networks and hindering disease transmission.
- A threshold rewiring rate can eliminate weak endemic states, transitioning to a healthy phase.
- In strong endemic scenarios, increased rewiring decreases prevalence, approaching single-network levels.
- Rewiring amplifies finite-size effects, increasing the probability of epidemic confinement to a single network.
Conclusions:
- Adaptive link rewiring is an effective strategy for controlling epidemic spreading in interconnected network systems.
- The efficacy of rewiring depends on infection rates, coupling strength, and network connectivity.
- Rewiring can prevent cross-layer transmission and mitigate epidemic impact, especially in finite-sized networks.
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