aidsmap.com :: HIV basics - HIV & AIDS: "Untreated HIV eventually leads to AIDS. The first cluster of AIDS cases were reported in New York and San Francisco in 1981. Doctors noticed that gay men were becoming ill with a rare form of pneumonia (PCP) and a cancer called Kaposi’s sarcoma.
Researchers worked out that these men had an underlying infection, and that it was likely to be sexually transmitted and blood-borne.
Further cases of AIDS were soon reported in gay men in other countries, including the UK. But it quickly became apparent that AIDS was affecting other groups as well.
In 1985, the virus that is now known as HIV was identified.
Even before HIV was discovered, safer sex and safer drug use had become established ways of reducing the risk of the illness.
As the virus spread around the world and deaths mounted, research went into finding a cure or vaccine. The first drug found to have an effect against HIV was AZT."
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