Michigan and Pennsylvania join six other states with measles outbreaks. Here's what to know

Michigan officials confirmed a new measles outbreak Thursday near Grand Rapids, bringing the U.S. to eight states with active outbreaks of the vaccine-preventable disease. Earlier this week, Pennsylvania declared an outbreak in Erie County as well.Last week, U.S. measles cases topped 700, with Texas reporting the majority of them. Two unvaccinated elementary school-aged children died from measles-related illnesses near the epicenter of the outbreak in rural Wes