DLA Troop Support seeks suppliers for injectable influenza vaccine for the 2027-2028 flu season, approximately 1.5 million prefilled-syringe doses, with quantities subject to final Service requirements. The vaccine must be FDA-approved for ages 65+, 18+, 3+, and 6-35 months, with the 2027-2028 formula set by FDA/VRBPAC, and the contractor must have FDA approval and CDC ACIP recommendation. It is an indefinite-quantity contract based on an annual estimate, with a guaranteed minimum of 75% and maximum of 150%, and National Stock Numbers established at award. All quantities deliver to Defense Depot New Cumberland, PA, with a preferred delivery schedule of 40% by August 12, 2027, 25% by August 26, 2027, 25% by September 9, 2027, and 10% by September 23, 2027, though other schedules may be considered. The solicitation will be posted on DIBBS and SAM.gov, with a projected solicitation date of October 2026 and possible earlier or later issuance.