THE first 28 days of life are among the most dangerous in a human’s existence. In 2009 3.3m children died before they were four weeks old, down from 4.6m in 1990, according to a new paper from the World Health Organisation. The burden is not spread evenly. Five populous countries—India, Nigeria, Pakistan, China and the Congo—now account for more than half of all neonatal deaths. And though mortality rates for newborns are falling, progress is much faster in some regions than others. If current trends continue, neonatal mortality rates in Africa will not reach the rich world's levels until 2166.
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http://www.economist.com/blogs/dailychart/2011/08/newborn-deaths