ABSTRACT
Acquired immunodeficiency syndrome (AIDS) was first
described as a clinical entity at the beginning of the 1980s.
During 2006 around 4 million adults and children became
infected with HIV (human immunodeficiency virus), the
virus that causes AIDS. By the end of the year, an estimated
39.5 million people worldwide were living with HIV/AIDS.
The year also saw around 3 million deaths from AIDS,
