The measles outbreak in Pennsylvania is spreading.
There have been 70 cases in the state since April. Most of them have been in Lancaster County, but cases have also been confirmed in five other counties.
The most recent ones are in York and Northumberland counties.
The state health department says all of the cases have been in people who are not vaccinated.
Health officials have been able to vaccinate 1,300 people at pop-up vaccination clinics so far this year.
(Photo by Jan Sonnenmair/Getty Images)
