Caribbean U.S. issues Cuba travel warning By Jerry Limone / September 19, 2017 Share 1 -- The U.S. State Department has issued a Cuba travel warning, advising U.S. citizens about the risks of travel to Cuba while the island is recovering from Hurricane Irma. Some parts of country may be without power or running water. The State Department specifically said north-central Cuba suffered severe damage and “should be avoided until further notice.”Power and water service have been restored in Havana, said the State Department, which added that floodwater has severely damaged the U.S. embassy in Havana.Meanwhile, the Trump administration is considering a closure of the embassy because of “health attacks” that have harmed American diplomats in Cuba, according to the Associated Press.The AP reports that 21 individuals have been affected. Some have permanent hearing loss or concussions, while others suffered nausea, headaches and ear-ringing. Some are struggling with concentration or common word recall.Some victims felt vibrations or heard loud sounds mysteriously audible in only parts of rooms, leading investigators to consider a potential "sonic attack," the AP reported. Others heard nothing but later developed symptoms.The State Department has emphasized that the U.S. doesn't know what has occurred. Cuba has denied any involvement or responsibility but said it is eager to help the U.S. resolve the matter.