#Measles outbreak reaches 42 Pennsylvania counties as the CDC sends an expert to help. State health officials confirmed 1,286 cases across 42 counties, including 247 hospitalizations and five measles-associated deaths, as of October 19. CDC has now sent an epidemic intelligence officer to help the state track transmission, estimate the outbreak’s reach. #Pennsylvania has expanded vaccination clinics, and administered more than 56,000 MMR doses in September. #vaccineswork