Figure 4

A, The time course for the average fraction of culled and infected farms with (blue bars) and without the containment strategy (gray bars) are shown. During the early stage of the AI infection, 0 to 10 days, there are a lot of culled birds in poultry farms in order to contain AI spreading. B, The average fraction of healthy (green circles), infected (red circles) and culled (blue circles) poultry farms at t = 50 days as a function of λ are shown. C, The adverse effects of reporting delays are shown. The average fraction of healthy farms at t = 50 days are plotted as function of λ. The curve with green circles, blue circles, and red circles represent ϕ = 1, ϕ = 2 and ϕ = 3.