March of Dimes : The rate is the world 's second highest . More than 85 percent of world 's births are premature . Nearly 10 percent of premature births are in developing parts of Asia , Africa . But Africa has world 's second -highest premature birth rate . Doctors have yet to identify a reliable remedy to prevent early labor , group says .
March of Dimes : More than 85 percent of world 's births are premature . Nearly 10 percent of premature births are in developing parts of Asia , Africa . But Africa has world 's second -highest premature birth rate . Doctors have yet to identify a reliable remedy to prevent early labor , group says .