Measles outbreak 'accelerates,' health officials warn

A nurse prepares the measles, mumps and rubella vaccine at the Rockland County Health Department in Haverstraw, N.Y. Several measles outbreaks in New York state are contributing to this year's unusually high measles rates.
A nurse prepares the measles, mumps and rubella vaccine at the Rockland County Health Department in Haverstraw, N.Y. Several measles outbreaks in New York state are contributing to this year's unusually high measles rates.