The Time.com reports on how a group of people seem to have a natural immunity to Aids
Cursed, Yet Blessed - TIME: "Munyiva is one of a remarkable group of 25 Nairobi prostitutes who are the subjects of intensive scientific study. The fact that they have no symptoms of AIDS is not so amazing, since HIV can lie dormant in the body for many years before it begins its deadly work. What is surprising is that the virus cannot be found in these women at all; it apparently cannot establish itself in their cells.
A small number of people in other high-risk groups, including some homosexuals and spouses of infected hemophiliacs, have shown resistance to infection. But the Nairobi prostitutes, so frequently exposed to the virus for so many years, provide the strongest evidence yet that people can have a natural immunity to AIDS. If the cause of that protection can be identified, it could spur efforts to develop a vaccine."
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