Figures & data
Fig. 1. Spatial schema representing how the virulence of an infection arises (A) and how a biological association moves from virulence to pathogenicity (B). Note that in (A) the genotype only partly determines the phenotype and that the environment includes many factors (e.g., multiple infections). In (B), one needs to set a threshold value in order to decide when a parasite is virulent enough to be considered a pathogen. The rectangle illustrates the uncertainty in defining such a value.
