The Virginia Department of Health is expanding its investigation into a potential measles exposure in Loudoun and Fairfax counties.
People who have spent time in Fairfax and Loudoun counties recently may have been exposed to measles, health officials are warning.
A passenger infected with measles traveled through Dulles International Airport, prompting health officials to warn other travelers.
The woman with measles who traveled in to Dulles and then out from BWI also spent time in D.C.
Heath officals are warning the public about five cases of measles in the area.