does serosorting work - study from earlier this year

[kinkygradstudent]

Two quotes from the article --

*Remarkably, when compared to having no UAI, having a single, uninfected partner was found to reduce relative HIV risk by 44%, and being an exclusive top reduced risk by 45%.

*In the end, seroadaptive behaviors should work in complement with regular condom use and HIV testing, Vallabhaneni suggested. "The main message we would like to get out there is that serosorting itself is twice as risky as not having unprotected anal sex," she said. "But it has a 38% risk reduction when compared to having no strategy at all -- so it may be a harm reduction strategy for those engaging in the highest risk behavior."

*Vallabhaneni also noted that although the study seemed to find 15% less risk for HIV acquisition among those who used seropositioning (based on an adjusted hazard ratio of 0.85) when compared to the HIV risk among those who used no UAI, the adjusted hazard ratio actually ranges between 0.50 and 1.44, meaning the relative HIV risk of seropositioning is not significantly different than having no UAI.

http://www.thebody.com/content/66482/mixed-findings-paint-a-tricky-picture-for-hiv-sero.html

Interestingly, having the HIV-positive partner exclusively bottom ("seropositioning") reduced risk by 15%, but this was not considered statistically significant. That is kind of puzzling to me - if being an exclusive Top reduces risk by 45%, why does the HIV-negative person always topping not produce the same results?

It's also surprising that exclusively Topping is as effective as monogamy...

Here's a link to the original conference presentation as well-

http://www.retroconference.org/2012b/Abstracts/43514.htm