Department of Health and Human Services. IV Prioritizing a threat-based approach 401. Assistant Secretary for Preparedness and Response Section 2811(b) ( 42 U.S.C. 300hh–10(b) ) is amended— (1) in the matter preceding paragraph (1) by inserting utilize experience related to public health emergency preparedness and response, biodefense, medical countermeasures, and other relevant topics to after shall