A person in Clark County has tested positive for measles, public health officials announced on Friday.

Officials said the person visited Ridgefield High School, while contagious, on Jan. 14, 15 and 16.

“People who were at Ridgefield High School those days and who have not been vaccinated against measles or have not had measles in the past are at risk for getting sick,” the announcement reads.

“Clark County Public Health is working with Ridgefield School District to identify students and staff who are not protected against measles. Those individuals will be excluded from school, child care and other public settings for 21 days.”

Measles is highly contagious and poses the highest risk to people who have not been vaccinated.

This was the sixth measles cases confirmed in Washington this year, and the first one in Clark County.

Three cases of measles have been confirmed in Oregon so far this year. Two cases were announced in Linn County on Jan. 10 and another was announced in Clackamas County on Jan. 16.

There have been 416 cases confirmed nationwide this year, according to the Centers for Disease Control and Prevention. There were 2,255 cases confirmed across the country last year.

News Source : https://www.opb.org/article/2026/01/24/clark-county-measles-case/