The academic medical community, albeit often financed by Big Pharma, is currently of one mind about HIV/Aids.

I was in medical school in the late 80s in New York when the initial research was occurring and I've followed the subject since leaving the industry.

The incidence of HIV infection is well documented and has subsided in many populations and cohorts. The 'ease' with which infection occurs has always been overblown by the media, using statistics from gay men and intravenous drug users, both of which have significantly higher activity/infections rates than heterosexual couples.

Treatment of Aids now is a medical success story, hampered only by treatment costs. http://www.healthline.com/health/hiv-aids/life-expectancy

STD infections in developing countries are nearly impossible to track anymore since treatment can occur through google and OTC pharmaceuticals.

Ex-pats that have 'bare-back' sex and return home to their wife without dosing themselves are courting disaster.