For the fi nal list of risk zoonoses, 3 of the original 30 agents (Hendra virus, Menangle virus, and Rickettsia prowazekii) were removed because few, if any, genera were found to harbor these infections; the fi nal tables therefore include 27 diseases (Tables 1-3) . The risk zoonoses capable of infecting the greatest number of genera were: rabies viruses, in 78 genera; Bacillus anthracis, the causative agent of anthrax, in 57 genera; Mycobacterium tuberculosis complex, in 48 genera; Echinococcus spp., the agents of hydatid cyst disease, in 41 genera; Leptospira spp., in 35 genera; Brucella spp., the agents of undulant fever, in 32 genera; Francisella tularensis, the agent of tularemia, in 31 genera; Crimean-Congo hemorrhagic fever virus, in 27 genera; Y. pestis, the agent of plague, in 24 genera; and Coxiella burnetii, the agent of Q fever, in 20 genera ( Table  2 ; online Technical Appendix, available from www.cdc. gov/EID/content/15/11/1721-Techapp.pdf).