Why is Baltimore in poorer health than urban Nigeria?

In the Baltimore neighborhood of Sandtown, the infant mortality rate is more than than six times the national average, and life expectancy is more than a decade lower than in the rest of the country. And the health outlook is especially poor among teens. Dr. Robert Blum, Johns Hopkins Urban Health Institute Director, joins Hari Sreenivasan. Read the full transcript: http://www.pbs.org/newshour/bb/teens-baltimore-poorer-health-urban-nigeria/#transcript