Is this natural selection?
Although gays form just 4% of the US population, they account for 63% of all the new HIV infections. Almost 90% of all the new cases are linked to gay / bisexual men, as more than 80% of the women newly identified with HIV were also infected by bisexual men.
http://www.cdc.gov/hiv/pdf/statistics_basics_factsheet.pdfSo far in the United States, some 311,087 gays have died due to the HIV infection, since the first case was diagnosed in the 1980s. Out of the ~1,200,000 people currently living with HIV in the United States, some 624,000 are gay.
This means that a total of 935,000 HIV infections have occurred among the gays ever since 1980s, out of a total population of 12 million. That represents an
incidence rate of 7.8% against the general prevalence rate of 0.4% and a prevalence of <0.1% among heterosexual men.