Figure 1: Although the vast majority of zoonotic disease scientific publications focus on a single vertebrate host species, the majority of zoonotic pathogens infect multiple host species. (a) Over 70% of the 1672 publications listed on PubMed that focus on a zoonotic pathogen investigated a single vertebrate host species. (b) By contrast, nearly 74% of the 865 zoonotic pathogens with documented host-species ranges infect multiple host species [1, 1921].