FIGURE S-1 Interactions of emerging infectious diseases (EIDs) with a continuum that includes wildlife, domestic animal, and human populations. Few diseases affect exclusively one group, and the complex relations among host populations set the scene for disease emergence. Examples of EIDs that overlap these categories include Lyme disease (wildlife to domestic animals and humans); bovine tuberculosis (between domestic animals and wildlife); Escherichia coli O157:H7 (between domestic animals and humans); and Nipah virus and rabies (all three categories). Companion animals are categorized in the domestic animal section of the continuum.

framework as a whole in relation to different animal disease scenarios. In doing so, it sought to identify ways to improve the framework.

Finally, although animals are subject to the same causes of disease as humans—that is, diseases with chemical, physical, microbial, or genetic causes—the study focuses primarily on infectious diseases, as directed by the Statement of Task (see Chapter 1, Box 1-1, for the committee’s Statement of Task). This focus arises from concern about the growing threat posed by the spread of emerging infectious disease associated with the increasing global interconnectedness of domestic animals, wildlife, and humans, and by the possibility of bioterrorism.

OVERVIEW OF THE ANIMAL HEALTH FRAMEWORK

The essential components of the animal health framework include the following:



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