; and (4) identification of gaps in research related to core public health infrastructure and recommendations of priority areas for such research. (j) Tribal set-Aside Of the amount appropriated under subsection (a) for a fiscal year, the Secretary shall reserve 3 percent for purposes of, acting through the Director of the Centers for Disease Control and Prevention and in consultation with the Director of the Indian Health Service, awarding grants under this section to Tribal health departments and to epidemiology centers established under section 214 of the Indian Health Care Improvement Act ( 25 U.S.C. 1621m ). 3. Core public health infrastructure and activities for CDC (a) In general The Secretary, acting through the Director of the Centers for Disease Control and Prevention, shall expand and improve the core public health infrastructure and activities of the Centers for Disease Control and Prevention to address unmet and emerging public health needs and provide technical assistance to grantees funded under this provision, including the administration of the grants under section 2(b)(1). (b) Report The Secretary shall submit to Congress an annual report on the activities funded through this section. 4. Core Public Health Infrastructure defined For purposes of this Act, the term core public health infrastructure means all of the following elements, and the workforce needed to establish and maintain such elements: (1) Assessment (including surveillance, epidemiology, and laboratory capacity) The ability to track the health of a community through data, case finding, and laboratory tests with particular attention to those most at risk. (2) All hazards preparedness and response The capacity to respond to emergencies of all kinds. (3) Policy development and support The ability to translate public health science into appropriate policy and regulation. (4) Communications The ability to reach the public effectively with timely, science-based information to mitigate the impact of public health threats, with particular