A doctor with the Yale School of Medicine says he’s concerned about recent cases of measles in Pennsylvania, Virginia and now Georgia. Dr. Thomas Murray focuses on infectious diseases and global health. He says about 90-percent of susceptible people who are exposed to measles will come down with the highly contagious virus. It was eliminated from the U.S. in 2000, but has been making a comeback as childhood vaccination rates fall below the threshold in some areas. Murray says measles spreads when unvaccinated people travel abroad, become infected and return to the United States.
