in this paragraph 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 Public Health Service Act: Provided further , That funds appropriated under this heading in this Act may be transferred to, and merged with, the fund authorized by section 319F–4, the Covered Countermeasure Process Fund, of the Public Health Service Act: Provided further , That funds appropriated under this heading in this Act may be used for grants for the construction, alteration, or renovation of non-Federally owned facilities to improve preparedness and response capability at the State and local level: Provided further , That funds appropriated under this heading in this Act may be used for the construction, alteration, or renovation of non-Federally owned facilities for the production of vaccines, therapeutics, and diagnostics where the Secretary determines that such a contract is necessary to secure sufficient amounts of such supplies: Provided further , That of the amount provided under this heading in this Act, $100,000,000 shall be transferred to Health Resources and Services Administration—Primary Health Care for grants under the Health Centers Program, as defined by section 330 of the Public Health Service Act, to prevent, prepare for, and respond to coronavirus: Provided further , That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. For an additional amount for Public Health and Social Services Emergency Fund , $300,000,000, to remain available until September 30, 2024, for products purchased as described in the first paragraph under this heading, including the purchase of vaccines, therapeutics, and diagnostics, and under the same terms and conditions as the amounts made available in the first paragraph under this heading in this Act: Provided , That the amount made available in this paragraph shall only