Figure 4

Patterns of the log likelihood by σ, the parameter for the distance for the different model variants. Red line: the base model; Blue line: the base model with imported infections (model variant ii); Brown line: the base model with a limit on the number of current infections per person (model variant iii); Purple line: the base model with immunity to recently seen genotypes (model variant iv); Green line: the base model with heterogeneity in transmission at the household level (model variant v). Model variant (vi) (combinations of the above variants) are not shown since they produced similar results.