As part of a wide assessment of infant mortality the charity looked at urban areas across the globe, including 25 cities in wealthy developed countries. London came 19th in the list of 25 that was topped by Prague. The infant death rate in London is 4 in every 1000 live births. In Prague, Stockholm and Oslo it is half that.
Washington DC came bottom of the ranking with a death rate of 7.9 infants per thousand. Within the US capital there is a wide discrepancy with the death rate 10 times higher in the poorest neighbourbood as the richest one.
Urban populations are growing worldwide, and while this has led to better survival rates for children under 5, according to Save the Children, there is a growing gap between urban rich and urban poor. Survival rates for the poorest children in city slum areas are as bad or worse than those for rural areas.