Most cases of so-called Havana Syndrome can be explained by environmental causes, undiagnosed medical conditions or stress, rather than actions by a foreign power, The New York Times reported on Thursday, citing Central Intelligence Agency (CIA) officials.
A majority of 1,000 cases reviewed by U.S. investigators are explainable, and show the mysterious ailment is unlikely to have been caused by Russia or another foreign adversary, CIA officials told the newspaper, describing interim findings of a study.
