; and (II) are not available in sufficient quantities in the United States; and (iii) the decrease in imports of components or supplies described in clause (ii) contributed importantly to such workers’ separation or threat of separation and to the decline in the sales or production of such firm; or (E) (i) the sales or production, or both, of such firm have decreased; (ii) exports of articles produced or services supplied by such workers’ firm have decreased; (iii) the decrease in exports described in clause (ii) occurred during a period during which— (I) a public health emergency declared under section 319 of the Public Health Service Act ( 42 U.S.C. 247d ) is in effect for the jurisdiction in which such firm is located; or (II) a national emergency declared under section 201 of the National Emergencies Act ( 50 U.S.C. 1621 ) with respect to public health and safety within the United States is in effect; and (iv) the decrease in exports described in clause (ii) contributed importantly to such workers’ separation or threat of separation and to the decline in the sales or production of such firm. . (b) Public health emergency defined Section 222(c) of the Trade Act of 1974 ( 19 U.S.C. 2272(c) ) is amended by adding at the end the following: (5) Public health emergency The term public health emergency means a public health emergency declared— (A) by the Secretary of Health and Human Services under section 319 of the Public Health Service Act ( 42 U.S.C. 247d )