Sept. 13 (UPI) -- The U.S. Centers for Disease Control and Prevention on Monday added 10 destinations to its most severe level of travel warning.
The health agency designated Afghanistan, Albania, Belize, Grenada, Israel, Lithuania, Mauritius, Serbia, Slovenia and Saint Kitts and Nevis as "Level 4: Very High," urging Americans not to travel to these destinations unless they are fully vaccinated.