Pompeo says U.S. still working to determine what caused 'Havana syndrome'

Reuters

Published Oct 21, 2020 11:42AM ET

Updated Oct 21, 2020 12:30PM ET

WASHINGTON (Reuters) - The United States is still investigating what caused dozens of U.S. government employees in China and Cuba to become mysteriously ill, U.S. Secretary of State Mike Pompeo said on Wednesday.

Over 40 U.S. government employees were affected by the incidents, which took place between late 2016 into 2018 and came to be known as the "Havana syndrome."

Speaking at a news conference at the State Department, Pompeo said "significant U.S. government resources" had been dedicated to solving the mystery but there was still no complete analysis, only theories, about how the incidents came to pass.

"We've done a lot of work to try and identify how this all took place and we continue to try and determine precisely the causation of this, while doing our best to make sure we're taking care of the health and safety of these people," Pompeo said.

Dozens of staff in Cuba in 2017 reported symptoms that included hearing loss, ringing in their ears, vertigo, headaches and fatigue, a pattern consistent with mild traumatic brain injury and initially described as the result of “sonic” or health attacks of some sort.