In 1983 hiv was recognized as the cause of aids. Throughout the 1980"s were years of many people dying of aids with extreme fears in the. Cd4 count refers to the strength of your immune system. When your cd4 drops from 1200 (normal) to below 300-200, you become labeled with. Msm men who have sex with men (anal sex as there"s a lot of tearing, blood etc) The listed intercourse does not take into account stds, for example, syphilis involves open sores and blood. Adults and children estimated to be living with hiv as of end 2004. Most of the infections are in sub-saharan africa. Women are more infected than men this is common in the cases where individuals participate in heterosexual sex. There"s more aids in urban areas than rural areas. The prevalence amongst children is fairly equal because of maternal transmission and reduces with age because kids with hiv don"t last very long with the disease.