; tribal organization The terms Indian tribe and tribal organization have the meanings given such terms in section 4 of the Indian Health Care Improvement Act. (b) Expansion of activities under the Alzheimer’s Disease and Healthy Aging Program In addition to activities conducted by the Secretary under the Alzheimer’s Disease and Healthy Aging Program of the Centers for Disease Control and Prevention, the Secretary, acting through the Director of the Centers for Disease Control and Prevention, subject to appropriations under subsection (g), shall award cooperative agreements under subsections (c), (d), and (e). (c) Centers of excellence in public health practice (1) In general The Secretary shall award cooperative agreements to eligible entities for the establishment or support of national or regional centers of excellence in public health practice in Alzheimer’s disease to— (A) advance the education of public health officials of States, of political subdivisions of States, and of Indian tribes or tribal organizations, health care professionals, and the public on Alzheimer’s disease, cognitive decline, brain health, and associated health disparities; (B) advance the efforts of public health officials referred to in subparagraph (A) in applying evidence-based systems change, communications, and programmatic interventions for populations with cognitive impairment, including Alzheimer’s disease, and caregivers for such populations