Fig. 2.

Prediction result for relative (density-dependent; DD) spillover risk from animals to humans, based on detected viruses, species distributions, and human population densities. This map is created by linearly mapping a given value to the 0–1 range and then applying a power-law normalisation (i.e., $y=x^{\gamma }$, where $\gamma$is the power and set to 0.15) over that range to map colourmaps onto data in non-linear ways. The histogram of the distribution of spillover risk is depicted in Fig. S6.