The DC Department of Health is working to identify people who may have been exposed to measles, including people who traveled on an Amtrak train from New York to the US capital last week.

Amtrak has resumed service between New York Penn Station and Philadelphia ... incident has impacted trains operating from Washington Union Station (WAS) to Boston South Station (BOS).

The Massachusetts Department of Public Health told the Globe it learned the infected person boarded at Penn Station in New ...