American service members will no longer be required to get a yearly flu shot under a new Defense Department policy described by Secretary of Defense Pete Hegseth as an effort to “restore freedom and strength to our joint force.”
In a video posted on X, the Pentagon boss cited the Biden administration's Covid-19 policies as the impetus for ditching the unrelated but mandatory influenza inoculation, accusing his predecessors of having “waged an unrelenting war on our warriors on many fronts, including when it came to denying them simple medical autonomy and the freedom to express their religious convictions.”
Calling the Covid-19 vaccine mandate part of an “era of betrayal” that was now “over,” Hegseth said the Pentagon was discarding “absurd, overreaching mandates that only weaken our war fighting capabilities,” such as “the universal flu vaccine and the mandate behind it.”
“The notion that a flu vaccine must be mandatory for every service member, everywhere, in every circumstance at all times is just overly broad and not rational,” he said.
Hegseth emphasized that the Pentagon’s new policy was “simple.”
“If you, an American warrior entrusted to defend this nation, believe that the flu vaccine is in your best interest, then you are free to take it,” he said.
The defense secretary conceded that service members “should” receive the flu vaccine but said the Pentagon would not “force” them to do so because matters of health and conscience are “not negotiable.”
“It's the kind of common sense approach we're undertaking in this department,” he insisted.
Despite Hegseth’s characterization of the flu vaccine requirement as an “absurd” mandate that violates service members’ rights, the military has a long history of requiring vaccinations dating back to 1777, when General George Washington ordered all Continental Army soldiers and new recruits to be inoculated against Smallpox.
While Smallpox was declared eradicated in May 1980, the Pentagon renewed a Smallpox vaccine mandate for personnel deployed to high-threat areas and in certain high-priority units due to the threat of bioterrorism.
Although influenza is usually not considered in the same degree of danger as smallpox once was, it has had deadly effects on U.S. combat effectiveness in wars past.
During World War I, the 1918 influenza pandemic brought down roughly 45,000 American soldiers — a number equalling almost half of the 117,000 service members who died during that conflict which was almost as many as the 53,402 who died in actual combat.
The vaccine mandates given to service members by the Pentagon were largely uncontroversial until the Biden administration, when conservative activists began casting them as overreach and Democratic-led infringements on religious freedom.
Since the start of the Trump administration in 2025, administration officials have worked to undermine longstanding federal vaccine policies under the guise of what officials call the ‘Make America Healthy Again’ movement.
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