Public health officials in Massachusetts issued warnings recently, reminding people that measles can still be a concern after two cases of the disease were diagnosed in Boston.
They also cautioned that measles can spread fast among people who are not vaccinated — about 3 percent of the state's population.
And they flagged western Massachusetts in particular for its growing number of parents who decline or delay recommended immunizations.
As New England Public Radio's Karen Brown reports, that's creating a quandary for pediatricians concerned about old diseases making a comeback.
This segment aired on October 7, 2013.