U.S. Military No Longer Requires Flu Vaccines Despite Historical Evidence of Threat to Readiness

On Tuesday, Secretary of Defense Pete Hegseth announced that U.S. Military personnel will no longer be required to receive the annual influenza vaccine, making the shot optional for all active and reserve service members.

Hegseth stated in a video posted on social media that the previous mandate was “overly broad and not rational,” emphasizing that service members should be free to choose whether to get the vaccine based on their own judgment of personal health risk.

The policy change takes effect immediately and aligns with a prior decision to make the COVID-19 vaccine optional, which followed the dismissal of approximately 8,000 service members who refused the shot during the pandemic.

Hegseth referenced those dismissals, saying, “Our men and women in uniform were forced to choose between their conscience and their country, even when those decisions posed no threat to our military readiness,” and declared that “that era of betrayal is over.”

The flu vaccine had been required for U.S. Military personnel since 1945, initially implemented after World War II due to concerns about biological warfare and the devastating impact of the 1918 influenza pandemic, during which more than 20,000 U.S. Service members died and hundreds of thousands were hospitalized.

Medical experts have warned that removing the mandate could undermine military readiness. A professor at the George Washington University School of Nursing called the move “a serious lapse in judgment,” arguing that influenza spreads quickly in close-quarters environments like barracks and recruit training centers, where infection rates have historically been higher than in the general military population.