Dec. 13 (UPI) -- Workers at the U.S. Embassy in Cuba have permanent inner ear damage after the mysterious sonic attacks in the building a year ago, a new study found.
The study found 25 Americans who worked at the embassy in Havana in 2016 and 2017 complained of hearing loss, dizziness, ear pain and vertigo. As a result, the affected individual would have mild cognitive issues and forgetfulness. Some report a ringing in their ear from tinnitus. The cause, they believe, was a high-frequency noise that followed them from room to room but stopped if they went outside.