U.S. health authorities believe that the measles outbreak is related to travelers coming back to the United States from other countries.
Most Americans undergo vaccination for measles while they are still young and the disease is no longer common in the country. Cases have minimal since vaccinations were implemented across the United States three to four decades ago.
In East Tennessee, health agencies started giving teens a second dose of the anti-measles vaccine. Adults and international travelers are also given an extra dose and are classified under the high risk category.
Measles is a viral disease during childhood, whose symptoms include rashes and high fever. Measles in adults, however, is more dangerous as it is usually accompanied with pneumonia and other complications.
