What other countries moved tiers? Here’s a list of the destinations that have recently moved to different tiers, according to the CDC. North Korea: Changing from Level Unknown to Level 4 Haiti: Changing from Level 3 to Level 4 Nicaragua: Changing from Level Unknown to Level 4 Uzbekistan: Changing from Level Unknown to Level 4 Angola: Changing from Level 3 to Level 2 Cambodia: Changing from Level 4 to Level 2 Barbados: Changing from Level 3 to Level 2 Bermuda: Changing from Level 4 to Level 2 Cameroon: Changing from Level 3 to Level 2 Curacao: Changing from Level 4 to Level 2 Djibouti: Changing from Level 4 to Level 3 El Salvador: Changing from Level 3 to Level 2