Figure 4From: Control of endemic swine flu persistence in farrow-to-finish pig farms: a stochastic metapopulation modeling assessment Survival analysis of swIAV within-herd fade-out according to the batch-rearing system (4-, 5-, 7-, 10- or 20-BR system). 200 simulations per scenario, χ2 Log rank test = 130, 4 df, p < 0.001.Back to article page