Clark County declared a public health emergency Friday over a growing measles outbreak following news that a person contagious with measles attended a recent Portland Trail Blazers game.

Clark County Council Chair Eileen Quiring declared the public health emergency to ensure Clark County Public Health has proper resources to continue its response, and so the department has access to additional resources outside the area, according to a Clark County news release.

“We’re in a race against the virus,” said Dr. Alan Melnick, director of Clark County Public Health.

In the latest measles update from Public Health, the the department warned that anyone who was at the Moda Center for a Portland Trail Blazers game from 5:30 to 11:30 p.m. on Jan. 11 may have been exposed to the highly contagious virus.

That game — a win against the Charlotte Hornets — was nearly sold out, with 19,393 people attending, according to ESPN.