the report explains how the slums where children live have diseases such as pneumonia and diarrhoea,two of the biggest killers of children under five in the world. UNICEF spokeswoman, marixie mercado, says many children are disadvantaged from birth and are excluded from "normal"society in which richer children can thrive. she says:"one-third of children in urban areas are not registered at birth [and that] makes them much more vulnerable to exploitation throughout their lives."UNICEF executive director anthony lake added:children are vulnerable to the injuries, illnesses and death that result from living in crowded settlements atop hazardous rubbish dumps or alongside railroad tracks.