Disease spreads on contact layer; awareness spreads on information layer
S: — I: — R: — Aware: —
On a duplex network, epidemic (SIR) spreads on the physical contact layer while awareness (susceptible-aware) spreads on the social/information layer. Aware individuals reduce their infection probability by factor (1-μ). Awareness can suppress outbreaks — but only if it spreads fast enough (δ>β). Click nodes to infect or make aware.