If traveling by air, check if your airline requires any health information, test results, or other documents. Check with your destination s Office of Foreign Affairs or Ministry of Health or the US Department of State, Bureau of Consular Affairs, Country Information page for details about entry requirements and restrictions for arriving travelers. Follow any entry requirements or restrictions at your destination which might include testing, quarantine, and providing contact information. If you do not follow your destination s requirements, you may be denied entry and required to return to the United States. If you test positive on arrival, you might be required to isolate. You might be prevented from returning to the United States as scheduled.