(Portland, OR) -- The Oregon Health Authority is urging people to get vaccinated against measles, especially if they're traveling for spring break. Twelve states, including California, Texas and New Mexico have reported cases of measles since January 1st. While Oregon has recorded no cases this year, there were 31 cases last year which was the highest count in more than 30 years. Measles is highly contagious and the increase in cases is due to people not getting the MMR vaccine against measles, mumps and rubella.