People who traveled through Dulles International Airport earlier this month may have been exposed to measles.
Health officials are telling anyone who was at the airport June 7 between 6 p.m. and 9 p.m. to be on the lookout for symptoms.
The specific locations of concern are concourse A or B, the international arrivals building, or in the baggage claim level of the main terminal.
Measles is very contagious and is spread through coughing, sneezing and contact with secretions from the nose, mouth and throat of someone who's infected.
Symptoms usually start with a fever of 101 degrees or higher, along with a runny nose, watery red eyes and a cough. The a rash appears about three to seven days later.
Health officials recommend you call your primary health care provider if you have symptoms.
They say if you make it past June 28 without symptoms, you are likely in the clear.
More information is available from Virginia state health officials the Loudoun County Health Department at 571-233-7317.