The Department of State warns U.S. citizens not to travel to Cuba. Over the past several months, numerous U.S. Embassy Havana employees have been targeted in specific attacks. These employees have suffered significant injuries as a consequence of these attacks. Affected individuals have exhibited a range of physical symptoms including ear complaints and hearing loss, dizziness, headache, fatigue, cognitive issues, and difficulty sleeping. The Governments of the United States and Cuba have not yet identified the responsible party, but the Government of Cuba is responsible for taking all appropriate steps to prevent attacks on our diplomatic personnel and U.S. citizens in Cuba. Because our personnel's safety is at risk, and we are unable to identify the source of the attacks, we believe U.S. citizens may also be at risk and warn them not to travel to Cuba. Attacks have occurred in U.S. diplomatic residences and hotels frequented by U.S. citizens. On September 29, the Department ordered the departure of nonemergency U.S. government employees and their family members to protect the safety of our personnel. Due to the drawdown in staff, the U.S. Embassy in Havana has limited ability to assist U.S. citizens. The Embassy will provide only emergency services to U.S. citizens. U.S. citizens in Cuba in need of emergency assistance should contact the Embassy by telephone at +(53)(7) 839-4100 or the Department of State at 1-202-501-4444. U.S. citizens should not attempt to go to the U.S. Embassy as it suffered severe flood damage during Hurricane Irma. Travelers should apprise family and friends in the United States of their whereabouts, and keep in close contact with their travel agency and hotel staff. For further information: Visit the Embassy Havana website for the latest messages to U.S. citizens and other information related to Embassy operations. See the State Department's travel website for the Worldwide Caution, Travel Warnings, Travel Alerts, and Country Specific Information for Cuba. Enroll in the Smart Traveler Enrollment Program (STEP) to receive the latest security updates and make it easier for the nearest U.S. Embassy to locate you in an emergency.