There have been more than 130 incidents of unexplained brain injury known as Havana syndrome among US diplomats, spies and defence officials, some of them within the past few weeks, it has been reported.
The New York Times said three CIA officers had reported serious symptoms since December, following overseas assignments, requiring outpatient treatment at the Walter Reed military hospital in Washington. One episode was within the past two weeks.
The reported number of cases is about 70 more than had previously been acknowledged.
