The Centers for Disease Control and Prevention (CDC) is seeking a contractor to conduct a multi-jurisdictional formative research study supporting the expansion of self-collection-based viral load monitoring for the Ending the HIV Epidemic initiative. This will be a firm-fixed-price purchase order, with the period of performance from August 1, 2026, to July 31, 2027. Services are to be performed at the contractor’s facility. The applicable NAICS code is 541720 (Research and Development in the Social Sciences and Humanities), and the procurement is unrestricted. Quoters must be registered in the System for Award Management (SAM) to be eligible for award.