More than half the world’s countries are now on the CDC’s “do not travel” list due to omicron Japan, Israel, Cuba and Armenia have all received the CDC's “Level 4″ classification, the agency's highest-risk rating for travel.

More than half the world’s countries are now on the CDC’s “do not travel” list due to omicron Japan, Israel, Cuba and Armenia have all received the CDC's “Level 4″ classification, the agency's highest-risk rating for travel. Read more