The Centers for Disease Control and Prevention (CDC) intends to award a sole source firm fixed price contract to the University of Michigan for access to proprietary models that assess the cost-effectiveness of vaccines. This procurement aims to secure detailed reports based on these models, which are deemed essential for the CDC's vaccine evaluation efforts, as no other models are known to provide the required level of detail. The contract will cover a base year with four additional option years, and interested parties may express their interest or capability to respond within fifteen days of this notice. Responses should be directed to contract specialists William O’Bryan at rvq0@cdc.gov and Ruben Reyes-Colon at qmz3@cdc.gov by 3:00 PM EDT on April 11, 2025.