EL SEGUNDO, Calif. — A Riverside County resident has tested positive for measles, according to health officials. It is the county's first confirmed case since 2018.

The adult, who has a recent history of international travel, lives in eastern Riverside County and is recovering at home. Documented measles vaccination could not be confirmed at this time, according to the Riverside University Health System's public information officer.

This is the ninth confirmed measles case in the state, with the remaining eight cases found in Fresno, Los Angeles, Orange, Placer, San Mateo​ and Tuolumne counties, according to the California Department of Public Health. Recent international travel has been a significant risk factor in this year's measles cases in California.

"Those who travel internationally to areas with ongoing measles transmission may be at risk for exposure," said Riverside County Public Health Officer Dr. Jennifer Chevinsky. "It’s important to check and make sure you are up to date on your vaccines, at least two weeks prior to international travel."

Will Sayre - Digital Media Producer

Will Sayre is a digital producer at Spectrum News. He graduated with honors from Boston University's College of Communication in three years and went on to work at Warner Bros. for the Emmy-winning series 'Crime Watch Daily' and 'Extra.' Sayre has interviewed many celebrities over the years, including Wolfgang Puck and Sugar Ray Leonard.