The U.S. Centers for Disease Control and Prevention has announced that more than 5 million Americans will get shots this year, a jump of more than 600,000 from last year.
The Obama administration has not said how many people have received the shots, but the number is expected to be large.
The agency said the shots will be distributed through state and local health departments on a nationwide basis, with the federal government picking up some of the costs.
The flu vaccine, which is being made available to the public at a cost of $500 a shot, is available in a range of strengths, including the one that is currently available for people who have never been vaccinated, and those who are not eligible for federal subsidies.
The CDC also said it would continue to provide flu shots to people who were recently admitted to a hospital, and will provide an additional $1 million in funding to states to cover the cost of the flu shots.
In a statement, the agency said it was working closely with states and hospitals to ensure they have access to the vaccine.
The White House has been quick to respond to the announcement, but said it has no plans to increase funding for the flu vaccine.
It has said it will spend $1.3 billion this year to help states pay for the shots.
The government will also continue to cover up to 50 percent of the cost for people with preexisting conditions, which the Trump administration has said will make it easier for people to buy the flu vaccines.
The Centers for Medicare and Medicaid Services said Friday that it would cover about 90 percent of coverage for people at high risk of getting the flu.