Figure 2.
Regions in p (degree of priming), q (priming protection) parameter space where the disease-free equilibrium is stable, the endemic equilibrium is stable, the endemic population is unstable and there is bistability. (a) Default parameters. (b) Increased pathogenicity (α = 2.5) leads to a reduced range of q over which the endemic population cycles. (c) Increased birth rate (a = 3) also leads to a reduced region of p over which the endemic population cycles. (d) Increased transmission (β = 5) leads to a greater region of p, q parameter space over which the endemic population cycles. (e) The addition of transgenerational priming (τ = 0.5) leads to a slight increase in endemic population cycling region. (f) When priming wanes over time (c = 3) the region over which the endemic population cycles is reduced. (Default parameters: a = 2, b = 1, h = 0.1, α = 1, β = 2, τ = 0, c = 0, fY = 0.2, fP = 0.5.)