good very well written Acquired immune deficiency syndrome, or AIDS, is a disease entity that has been recognized since 1981. It is caused by infection with the human immunodeficiency virus, which attacks selected cells in the immune system and produces defects in function. This leaves the body open to an invasion by various infections, which are therefore called opportunistic diseases, and to the development of unusual cancers. The virus also tends to reach certain brain cells. …showed first 75 words of 508 total…

…showed last 75 words of 508 total…routes, with transmission between homosexual men accounting for about 60 percent of AIDS cases. About 21 percent of AIDS cases occur in intravenous drug abusers exposed to HIV infected through sharing needles. The number of new cases of AIDS in reproductive age is increasing at an alarming rate. AIDS has become the leading cause of death for women between the ages of 20 and 40 in major cities of North and South America, Western Europe, and Sub- Saharan Africa.