The CDC plans to award one or more ID/IQ contracts for the purchase of standard commercial adult vaccines. These contracts will leverage Section 317 vaccine purchase funds to obtain vaccines at prices below the commercial market for distribution to state and local health departments. The vaccines will support adult immunization programs for populations at greatest risk across all fifty states, several large cities, and U.S. territories. Awardees may also use state and local funds to purchase additional quantities of vaccine under the resulting contract. No specific budget, performance location, or non-bid timelines are detailed in this description.