It's recommended to have gotten the following vaccinations before a trip to Croatia: Measles, Polio, measles-mumps-rubella, diphtheria-tetanus-pertussis, Chickenpox, and your yearly flu shot. Additional vaccinations you should get are Hepatitis A, Hepatitis B and Rabies. We recommend double checking with the CDC or your doctor for more information about vaccinations you need before your trip.