"Planning ahead for safe and healthy travel will make your experience at the Winter Olympics and Paralympics all the more enjoyable," Dr. Tom Frieden, director of the Centers for Disease Control and Prevention in Atlanta, said in a statement.
"Make sure your vaccines are up to date, pack a travel medicine kit, check your insurance, and stay healthy through good habits such as frequent hand washing and you'll come home a champion with lasting memories."
First meet with your doctor to ensure you are up to date on all routine vaccines such as measles, but you might need hepatitis vaccines, too, the CDC said.
Also, bring all medicines -- including over-the-counter medicines -- you think you might need during your trip, including extra in case of travel delays.
"Ask your doctor to help you get prescriptions filled early if you need to," Frieden said.
In addition, pack a travel health kit and plenty of warm and waterproof clothing and shoes.
CDC: Get your flu vaccine