The Association of State and Territorial Health Officials (ASTHO) is a national nonprofit organization representing public health agencies in the United States, the U.S. Territories, and the District of Columbia, and over 100,000 public health professionals these agencies employ. ASTHO’s mission is to support, equip, and advocate for state and territorial health officials in their work of advancing the public’s health and well-being with the hope of advancing health equity and optimal health for all.