There is established in the Treasury a reserve fund to be known as the "Infectious Diseases Rapid Response Reserve Fund" (the "Reserve Fund"): Provided, That of the funds provided under the heading "CDC-Wide Activities and Program Support" [132 Stat. 3073], $50,000,000, to remain available until expended, shall be available to the Director of the CDC for deposit in the Reserve Fund: Provided further, That amounts in the Reserve Fund shall be for carrying out titles II, III, and XVII of the PHS Act [42 U.S.C. 201 et seq., 241 et seq., 300u et seq.] to prevent, prepare for, or respond to an infectious disease emergency, including, in connection with such activities, to purchase or lease and provide for the insurance of passenger motor vehicles for official use in foreign countries: Provided further, That amounts in the Reserve Fund may only be provided for an infectious disease emergency if the infectious disease emergency (1) is declared by the Secretary of Health and Human Services under section 319 of the PHS Act [42 U.S.C. 247d] to be a public health emergency; or (2) as determined by the Secretary, has significant potential to imminently occur and potential, on occurrence, to affect national security or the health and security of United States citizens, domestically or internationally: Provided further, That amounts in the Reserve Fund may be transferred by the Director of the CDC to other accounts of the CDC, to accounts of the NIH, or to the Public Health and Social Services Emergency Fund, to be merged with such accounts or Fund for the purposes provided in this section: Provided further, That the Committees on Appropriations of the House of Representatives and the Senate shall be notified in advance of any transfer or obligation made under the authority provided in this section, including notification on the anticipated uses of such funds by program, project, or activity: Provided further, That not later than 15 days after notification of the planned use of the Reserve Fund, the Director shall provide a detailed spend plan of anticipated uses of funds, including estimated personnel and administrative costs, to the Committees on Appropriations of the House of Representatives and the Senate: Provided further, That such plans shall be updated and submitted every 90 days thereafter until funds have been fully expended which should include the unobligated balances in the Reserve Fund and all the actual obligations incurred to date: Provided further, That amounts in the Reserve Fund shall be in addition to amounts otherwise available to the Department of Health and Human Services for the purposes provided in this section: Provided further, That the transfer authorities in this section are in addition to any transfer authority otherwise available to the Department of Health and Human Services: Provided further, That products purchased using amounts in the Reserve Fund may, at the discretion of the Secretary of Health and Human Services, be deposited in the Strategic National Stockpile under section 319F–2 of the PHS Act [42 U.S.C. 247d–6b]: Provided further, That this section shall be in effect as of September 28, 2018, through each fiscal year hereafter.