This has never been a problem for the US Army before... such as when dozens of men died of the flu on the troop ship my grandfather took to France in 1918.
Joel Uckelman
Breaking news: The military will no longer require U.S. troops to receive the annual flu vaccine, Defense Secretary Pete Hegseth said, rolling back what he described as “overreaching mandates that only weaken our war-fighting capabilities.” https://wapo.st/4eAG2sx
www.washingtonpost.com
The move alarmed some public health experts, who warned that it would weaken troop readiness.