The situation occurred over the weekend at an AMC movie theater in Orange County, California. Now health officials are trying to contact other moviegoers who may have been exposed to the highly contagious disease.
Authorities say the woman attended a midnight show of the movie on April 26 at the AMC theater which is located at 1001 S. Lemon Street in Fullerton. The film is showing on multiple screens at the theater. It's not known which one she went to.
She is believed to be in her 20s and to have entered the theater at 11 p.m. and didn't leave until 4 a.m. The next day she went to the emergency room.
The woman recently traveled to Vietnam, which officials say is experiencing "widespread measles activity." The unnamed woman is now under “voluntary isolation” at home.
Potentially hundreds of movie patrons who attended the film are at risk of exposure to the measles.
If you suspect you might have been exposed, make sure to review your vaccination history, particularly if you've never had measles.