"Cross-reactions with non-HIV antibodies have been documented In the presence of the following: any other retroviruses besides HIV, the flu vlrus, common cold virus, herpes simplex 2 virus, hepatitis B virus, all Myco bacterium bacterial species (Including tuberculosis, leprosy, and M. avium "MAC"), vaccinations such as for flu or hepatitis B, pregnancy or prior pregnancy, blood transfusions, hemophilia, blood clotting factor, sperm, a highly oxidized physiological condition (associated with extensive use a drugs or blood products), autoimmune disorders such as lupus and rheumatoid arthritis; cancers such as multiple myeloma; alcohol hepatitis, alcoholism, liver disease, naturally occuring antibodies such as antibodies to carbohydrate, nuclear antigens, human T-cells, mitochondria, and cellular actin; tape worms and other parasites; malaria, malnutrition, and other conditions...in the general population, which the CDC estimates to have a prevalence of HIV infection of 0.006%, using a test with a specificity of 99.9%, the result is that 94% of all positives will be false positives."
Christine Johnson, Continuum Magazine, April/May 1995
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Borrowed from the site: http://sinfinity.net/hiv/aids4.html