The World Bank Indicators are an important source of data for anyone interested in topics such as Climate, Health, Poverty and other topics. The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and over time acquired immunodeficiency syndrome (AIDS). Although in the last years the medical treatments have improved substantially the life quality of those who are infected with the virus, there is still much more to do. In the following chart you can see the number of Children orphaned by HIV/AIDS (Number of children orphaned by HIV/AIDS is the estimated number of children who have lost their mother or both parents to AIDS before age 15 since the epidemic began. Some of the orphaned children included in this cumulative total are no longer alive; others are no longer under age 15.) per country from 1990 to 2014.