Substantial reduction in transmission of HIV virus with early treatment:
Men and women infected with HIV reduced the risk of transmitting the virus to their sexual partners by taking oral antiretroviral medicines when their immune systems were relatively healthy, according to findings from a large-scale clinical study sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health.
Medicynical Note: The study was done in a population that was 97% heterosexual but it is likely the same benefit would accrue in gay couples.
Medicynic 