Potential conflicts of interest. C. M. B. reports travel support from the Council of State and Territorial Epidemiologists Executive Board for attending the annual conference, roles as a member and chair of Compendium of Animal Rabies Prevention and Control committee of the National Association of State Public Health Veternarians, and Infectious Disease Committee chair for the Council of State and Territorial Epidemiologists Executive Board. A. D. reports roles as President of The Public Health Museum in Massachusetts, a Board member of the Massachusetts Infectious Disease Society, and Committee member of the Massachusetts Medical Society. All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed.