The Virginia Department of Health is sounding the alarm after a person who traveled through the Washington Dulles International Airport tested positive for measles.

The Virginia Department of Health says someone with measles traveled through Washington Dulles International Airport on Tuesday, Aug. 12.

The Virginia Department of Health has been notified of a confirmed case of measles at Dulles International Airport on Aug. 12.

Washington has seen 10 confirmed cases of measles so far in 2025, according to the state Department of Health, or DOH. The cases have all been on the west side, including six in King County and two each in Whatcom and Snohomish counties. The Whatcom County cases involved two family members in the same household.

GRAND JUNCTION, Colo. (KJCT) -Two measles cases have been confirmed in Mesa County. It’s the first time any have been confirmed in the county in over 20 years. According to Mesa County Public Health, there’s a lack of a clear source of infection for the cases. They said it suggests a community transmission in Grand Junction.

The out-of-state traveler visited the Flying J Travel Center in Roberts, Wisconsin, and the Pilot Travel Center in Beloit on Aug. 4.

Officials from the CDPHE warned about a possible measles exposure at Denver International Airport in Concourse C.

An out-of-state traveler stopped at the Beloit Pilot Travel Center, 3001 Milwaukee Road, before testing positive for measles.