The Office of Infectious Disease and HIV/AIDS Policy leverages expert advice to prevent infectious diseases through five federal advisory committees and workgroups. Advisory Committee on Blood and Tissue Safety and Availability (ACBTSA) Image ACBTSA provides advice to the Secretary on a range of policy issues related to blood, blood products, and tissues. Presidential Advisory Council on HIV/AIDS (PACHA) Image PACHA provides advice, information, and recommendations to the Secretary regarding programs, policies, and research that address HIV/AIDS. Presidential Advisory Council on Combating Antibiotic-Resistant Bacteria (PACCARB) Image PACCARB provides advice, information, and recommendations regarding programs and policies intended to support and evaluate implementation of U.S. government activities related to combating antibiotic-resistant bacteria. National Vaccine Advisory Committee (NVAC) Image NVAC recommends ways to achieve the optimal prevention of human infectious diseases through vaccine development and provides direction to prevent adverse reactions to vaccines. Tick-Borne Disease Working Group (TBDWG) Image TBDWG helps ensure interagency coordination, minimizes overlap, and examines research priorities related to tick-borne diseases.