The U.S. Centers for Disease Control and Prevention is advising those planning to travel internationally to make sure they’re vaccinated against measles. The warning, issued last week, says cases of the highly contagious disease are on the rise around the world.

The CDC is urging vaccination before international travel due to the increased risk of a measles exposure. Learn how to protect yourself, including whether you might need a vaccine booster.

The Centers for Disease Control and Prevention (CDC) has issued a comprehensive travel warning urging all Americans to ensure they’re fully vaccinated against measles before traveling internationally,