News Who will be able to get a COVID-19 booster shot and when? That’s still in limbo. September 13, 2021 Elizabeth Weise, USA TODAY Comments Off on Who will be able to get a COVID-19 booster shot and when? That’s still in limbo. As early as Sept. 20, third doses of the COVID-19 vaccine are set to become available. But guidance will come down to the wire to meet Biden's goal.