Overview
- The alert concerns an infectious traveler who rode the Amtrak Northeast Regional between Philadelphia and Washington, D.C., on Jan. 7–8.
- Potential exposure windows include BWI shuttle buses linking the rail station, airport drop-off areas, and long-term parking stops from late Jan. 7 into early Jan. 8.
- No exposures were identified inside BWI Thurgood Marshall Airport terminals, according to the Maryland Department of Health.
- Health officials note that two documented MMR doses or being born before 1957 generally indicates protection against measles.
- People who may have been exposed are urged to verify vaccination status, monitor for fever or rash for 21 days, stay home if symptoms appear, and call a provider before seeking in-person care.