Moderna US Inc., Cambridge, Massachusetts, was awarded a $52,600,000 modification (P00001) to contract W58P05-22-C-0017 for the purchase of COVID-19 pediatric booster vaccines. Work will be performed in Cambridge, Massachusetts, with an estimated completion date of March 27, 2024. Fiscal 2022 Response and Relief Supplemental Appropriations Act funds in the amount of $52,600,000 were obligated at the time of the award. U.S. Army Contracting Command, Aberdeen Proving Ground, Maryland, is the contracting activity.