Possible case of 'Havana syndrome' in Vietnam delays Vice President Harris' visit

A possible case of "Havana syndrome" in Vietnam delayed Vice President Kamala Harris' visit on Tuesday.

Vice President Kamala Harris' visit to Vietnam on Tuesday was interrupted by a report of an "anomalous health incident," the U.S. embassy in Hanoi said in a statement -- the latest case of the mysterious onset of medical symptoms more commonly referred to as "Havana syndrome." This is the first report of an incident in Vietnam and the first case involving a senior U.S. leader's travel overseas that has been publicly confirmed. The source of the unexplained health incidents, which now number over 130 possible cases, remains unknown, vexing U.S. officials amid multiple investigations and task forces by the CIA, State Department, and National Security Council, which is leading a government-wide probe. It's been nearly five years since State Department, CIA, and other personnel at the U.S. embassy in Havana first reported strange experiences, like feelings of pressure or vibration and a screeching sound, and debilitating symptoms, including headaches, nausea, cognitive deficits, and trouble with seeing, hearing, or balancing. Several officials have been diagnosed with traumatic brain injuries.