A health warning for anyone who traveled through Logan Airport in Boston recently.
Public health officials say there was a potential measles exposure in Terminal B on July 20.
The exposure lasted for about six hours, from 8:30 a.m. until 2:30 p.m.
A second exposure was also reported at a Tasty Burger restaurant in the city.
There has been at least one confirmed case of measles.
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Possible measles exposure at Boston airport, restaurant