U.S. intelligence agencies say they cannot link a foreign adversary to any of the incidents associated with so-called “Havana syndrome,” the hundreds of cases of brain injuries and other symptoms reported by American personnel around the world.

The State Department has named a new coordinator for its investigation into cases of so-called Havana Syndrome.

U.S. officials are continuing to investigate two possible cases of so-called Havana Syndrome health incidents that delayed Vice President Kamala Harris’ trip from Singapore to Vietnam.

U.S. Vice President Kamala Harris’ trip from Singapore to Vietnam was delayed several hours Tuesday by an investigation into two possible cases in Hanoi of the so-called Havana Syndrome in Hanoi.