2 dead in Pennsylvania as measles cases rise in the U.S.

Pennsylvania health officials announced Tuesday that two unvaccinated people, including an infant who had tested positive for measles, have died. Dr. William Schaffner, professor of medicine at Vanderbilt University Medical Center, joins CBS News to discuss.

Pennsylvania health officials announced Tuesday that two unvaccinated people, including an infant who had tested positive for measles, have died. Dr. William Schaffner, professor of medicine at Vanderbilt University Medical Center, joins CBS News to discuss.