Well, I for one don't go for the official AIDS story. The diagnosis of AIDS in Africa is obviously not the result of laboratory tests; it is the labelling of a number of common conditions (cough, fever, low body weight, diarrhea, (I forget the others)) that are indicators of a host of other problems that are endemic to impoverished, starving populations.
"AIDS in Africa is caused by malnutrition, release of endogenous cortisol, and opportunistic diseases. Atrophy in the lymphoid
tissue in people suffering from malnutrition has been known since 1925. Malnutrition causes severe atrophy in the thymus and
lymphoid organs and impairs the function of the T cells. These changes are reversible by feeding. The size of the thymus in
malnourished children increased from 20% of normal to 107% of normal, following nine weeks of feeding."
For more, see
http://www.virusmyth.net/aids/books/abbtoxic.htm
Joanna