Since 2021, COVID-19 vaccines have been available to the US public free of charge through the US governmentās COVID-19 vaccination program. Government procurement and distribution of the COVID-19 vaccine started toĀ phase outĀ as of August 3, 2023, ending in mid- to late September 2023. The end date is anticipated to coincide with the Food and Drug Administrationās authorization of a new monovalent vaccine withĀ XBB.1.5 compositionĀ and the transition of COVID-19 vaccine distribution toĀ commercial-market mechanisms.