Maryland confirms measles case, exposure sites at Dulles and DC clinic
A Maryland resident with recent international travel exposed travelers at Dulles and an Adams Morgan clinic, prompting alerts across Maryland, Virginia and D.C.
A measles case in a Maryland National Capital Region resident set off alerts across Maryland, Virginia and Washington, D.C. after officials identified exposure windows at Dulles International Airport and a clinic in Adams Morgan. The response widened quickly because the patient had recently traveled outside the United States and passed through shared public spaces where measles can spread before a diagnosis is made.
Maryland health officials said possible exposure at Dulles took place June 17 from 6 a.m. to 11 a.m. in Concourse C international arriving corridors, transportation to the International Arrivals Building and the baggage claim area. The same day, possible exposure at Mary’s Center Adams Morgan Clinic, 2333 Ontario Rd. NW in Washington, ran from 4 p.m. to 8:30 p.m. Virginia health officials separately said they were notified of a confirmed case that traveled through Dulles on June 17 and that the person was an out-of-state resident who had traveled internationally. DC Health also said it was investigating a confirmed case in a District resident who visited multiple locations while contagious.
Public health officials urged anyone who may have been in those locations to check vaccination records immediately, because measles exposure can require follow-up even when symptoms have not started. Maryland advised people to monitor for symptoms for 21 days after exposure and to seek medical guidance if they are not fully vaccinated or otherwise immune. Virginia said the risk to the general public was low for most people because many residents have immunity through vaccination, but it still told people at exposure sites to report the exposure and confirm their MMR status.
The Maryland case was the state’s first measles case of 2026. Maryland said it had recorded three cases in 2025, one in 2024, one in 2023 and none from 2020 through 2022. Earlier this year, Maryland announced another case on April 19 in a Baltimore metro area resident after international travel. The new exposure notice underscored how fast an imported infection can force coordination across jurisdictions when airports, clinics and commuter corridors overlap.
The regional alert came amid a broader surge in measles activity. Virginia confirmed an outbreak in Buckingham County on May 13, defining an outbreak as three or more related cases among non-household members, and later said it had 129 measles cases in 2026. As of June 18, the Centers for Disease Control and Prevention reported 2,104 confirmed U.S. cases in 2026 across 41 jurisdictions, with 93 percent outbreak-associated and 30 new outbreaks. Maryland’s case, like the others around it, showed how quickly a single imported infection can test local immunity gaps.
This article was produced by Prism’s automated news system from verified source data, official records, and press releases, then run through automated quality and moderation checks before publishing. The system is built and supervised by the people who set the standards it runs under. Read our full AI policy.
Did this article answer your question?
