The Department of Health and Human Services said on Friday that 2.5 million more doses of Bavarian Nordic's vaccine will be ordered for use against monkeypox outbreaks.
The shot has already been cleared for both smallpox and monkeypox in the United States, where it is called Jynneos.
The U.S. government is attempting to fight monkeypox by sending hundreds of thousands of vaccine doses to states in the coming months, expanding access to those most at risk and increasing supply to areas with high case numbers.
There have been more than 3,400 cases of monkeypox and one death since the outbreak began in May, according to a World Health Organization tally.
The total U.S. inventory of the vaccine would reach 4.4 million doses when combined with a 2020 order for 1.4 million doses, according to Bavarian Nordic.
The additional Jynneos vaccine will help us push out more vaccine quickly, knowing that we have more doses on the way in the coming months, HHS Secretary Xavier Becerra said.
Deliveries under the latest contract will start in the fourth quarter of 2022 and continue through early 2023, the company said.