http://www.who.int/docstore/bulletin/editorials/2000/issue1/povertyinequity.htm
http://www.who.int/docstore/bulletin/pdf/2000/issue1/Editorial.pdf

Human health has probably improved more over the past half century than over the previous three millennia. This is a stunning achievement - never to be repeated and, it is to be hoped, irreversible. Despite the devastating impact that human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) is having in Africa and will increasingly have in south and east Asia, it is likely that, overall, human health will continue to improve steadily during the coming decades. (AU)