In this chapter, the following documents are incorporated by reference: Control of Communicable Diseases Manual (American Public Health Association, Twentieth Edition, 2015); Compendium of Measures to Control Chlamydia psittaci Infection Among Humans (Psittacosis) and Pet Birds (Avian Chlamydiosis), 2017 (The Association of Avian Veterinarians, 2017); Compendium of Measures to Prevent Disease Associated with Animals in Public Settings, 2017 (The National Association of State Public Health Veterinarians, 2017); and Compendium of Animal Rabies Prevention and Control, 2016 (The National Association of State Public Health Veterinarians, 2016).