Health care workers

Philadelphia Health Commissioner Dr. Cheryl Bettigole says there have been six confirmed cases in Philadelphia.

PHILADELPHIA (WPVI) -- There are now six locations where people may have been exposed to measles since late December, the City of Philadelphia Health Department said.

That includes five locations announced Thursday in addition to one that was announced just two days before Christmas.In a news release, the city said there is a cluster of cases among unvaccinated residents.