SEATTLE — Washington state health officials announced two new coronavirus cases Friday night, a woman who had recently traveled to South Korea and a high school student whose school will be closed and sanitized.

The high school student attends Jackson High School in Everett, Washington, said Dr. Chris Spitters of the Snohomish County Health District. The student had not traveled recently and authorities were unsure how that person contracted the disease. The other case in Washington was a woman in in King County in her 50s who had recently traveled to South Korea, authorities said.

CORONAVIRUS IN OREGON: FULL COVERAGE

Both patients weren't seriously ill.

Earlier Friday, Oregon confirmed its first coronavirus case, a person who works at an elementary school in Lake Oswego, which will be temporarily closed.

“The case was not a person under monitoring or a person under investigation. The individual had neither a history of travel to a country where the virus was circulating, nor is believed to have had a close contact with another confirmed case — the two most common sources of exposure,” the Oregon Health Authority said in a statement.

The Lake Oswego School District sent a robocall to parents saying that Forest Hills Elementary will be closed through Wednesday so it can be deep-cleaned by maintenance workers.

-- The Associated Press