El país asiático ha bajado la tasa de contagio de madre a hijo del 40% en los noventa al 1,9% en 2015 y es ejemplo mundial
Something essential has faded from discussion of the world’s most lethal sexually transmitted epidemic: Sex.
That’s a shame. Only by understanding how illness spreads can the world hope to prevent it. It’s not possible to understand how HIV spreads — why in some places one in four adults have the virus, and in others one in a thousand do — without understanding how variations in sexual behavior inhibit or accelerate its path through societies.
Dramatically fewer black high school students are taking part in sexual behavior that puts them at risk for contracting HIV than they were 20 years ago. However, those students still engage in more risky behavior than their white and Hispanic counterparts.
Meanwhile, teens overall continue to engage in risky behaviors at rates that have declined only slightly over the past two decades, according to an analysis released Tuesday by U.S. government researchers.
Have you wondered why HIV prevalence is so high among young people, particularly young women, in southern Africa? If you have thought that sexual behaviour may account for the fact that young South African women are more than 10 times as likely to have HIV as their worldwide counterparts, you may want to think again. Listen to the third podcast based on the lead article in HIV This Week Issue 95 entitled ‘A Tale of Two Countries….‘.
A new study uses a mathematical model to predict the potential impact of expanding treatment to discordant couples on controlling the global HIV epidemic– in these couples one partner has HIV infection and the other does not. The research conducted at ICAP at Columbia University’s Mailman School of Public Health and the Semel Institute of Neuroscience and Human Behavior at University of California in Los Angeles (UCLA) is the first to predict the effect of the expansion of such treatment in couples on the HIV epidemic in certain African countries.
The most popular contraceptive for women in eastern and southern Africa, a hormone shot given every three months, appears to double the risk the women will become infected with H.I.V., according to a large study published in The Lancet Infectious Diseases on 4 October 2011. And when it is used by H.I.V.-positive women, their male partners are twice as likely to become infected than if the women had used no contraception.