(ABCNEWS.GO) — The measles outbreak that began in California continues to swell, with the Centers for Disease Control and Prevention adding 18 new cases to their official outbreak tally today.
There are now 102 people in 14 states who have become infected with the extremely contagious virus that is considered vaccine-preventable, according to the CDC. Most, but not all cases, have been linked to several dozen people who were exposed to the measles at Disneyland in Anaheim, California, and were not vaccinated.
"Although we aren't sure exactly how this year's outbreak began, we assume that someone got infected overseas, visited the parks and spread the disease to others," Dr. Anne Schuchat, who directs the National Center for Immunization and Respiratory Diseases, said during a news conference Thursday.
Advertisement - story continues below