Travelers bring 'imported measles' to US

The Centers for Disease Control and Prevention says 2011 was the worst year for the virus in 15 years in the U.S. A rash caused by measles is seen in this undated file photo.

April 8, 2011 5:04:54 AM PDT
In the year 2000, measles was declared eliminated in the U.S., but travelers are reportedly bringing it back to the country.

A new study finds cases continue to occur among U.S. residents who return from trips to other countries, as well as among foreign visitors.

According to researchers, young children are at greatest risk of complications or death from measles. It highly contagious but can be prevented by vaccination.

The report by the CDC finds in the first two months of this year, there were 13 cases of "imported measles" among U.S. residents.

That two month total is said to be comparable to the average annual caseload seen each year between 2001 and 2010.