LONDON, Sept 13: Countries across the world are making rapid progress on child survival rates, showing it is possible to bring down child mortality significantly in two decades, the United Nations Children’s Fund said today. In its latest report on child survival, UNICEF hailed a sharp drop of about 40 percent in the number of children under the age of five dying, with the estimated global toll falling from nearly 12 million in 1990 to 6.9 million in 2011. (agencies)