Fig. 1
From: Mathematical modelling of Echinococcus multilocularis abundance in foxes in Zurich, Switzerland
Graphical representation of the transmission model for E. multilocularis in animal hosts. The model represents the proportion of animals that develop immunity upon exposure to the infectious parasite stages at rate ah and the proportion that return to susceptibility at rate γ. Where a is the rate of acquisition of immunity, h is the infection pressure in parasites per year and γ is the rate of loss of parasite immunity