Philadelphia December 24, 2023 9:13 am Philly health leaders warn of possible measles exposure at Jefferson Health building Patients of Jefferson Health are being warned of a potential exposure to the measles virus on Dec. 19, 2023. US & World Videos 0:38 Latest batch of Cathedral Kitchen cooks graduate in Camden, NJ 1:55 Girl battling chronic disease, mom write book to ease kids' fears about MRIs 2:20 NJ family celebrates newborn son nicknamed ‘Miracle Mateo' 0:23 PECO helps Santa visit kids at Philly hospital 0:30 Survey finds most teens staying away from drinking, smoking and marijuana