CIA finds most Havana Syndrome cases not work of enemies: Report

First cases of so-called Havana Syndrome were reported by personnel at the US Embassy in Cuba in 2016 [File: Desmond Boylan/AP]

The CIA has determined a mysterious sickness affecting hundreds of United States diplomatic workers across the world is not part of a widespread targeted campaign by a foreign power, according to US media reports.

Officials briefed on the spy agency’s preliminary finding said hundreds of cases of the so-called Havana Syndrome – which first appeared in Havana, Cuba in 2016 and is typically defined by headaches, nausea, vertigo and dizziness – could be explained by environmental factors, undiagnosed medical conditions or stress, The New York Times reported on Thursday.