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Mild HIV type slows development of AIDS and makes new preventive treatments possible
Date:7/19/2012

A new study from Lund University in Sweden has opened the way for new approaches to slowing the development of AIDS in HIV-1-infected patients. It is hoped that this could lead to better treatment methods and preventive measures to combat HIV and AIDS.

The findings have just been published in the distinguished scientific journal New England Journal of Medicine.

The most common type of the virus that causes AIDS HIV-1 is less aggressive when it infects a person already carrying the milder HIV-2. The study looked at how the disease developed in those who had been infected with HIV-1 and those who were infected with both HIV-1 and HIV-2.

"The moderating effect of HIV-2 was extremely strong. The time it took to develop AIDS was around 50 per cent longer for those infected with both strains than for those only carrying the HIV-1 virus. The unusually large difference makes me, as a researcher, very optimistic that it will be possible to identify new and significant approaches that can be taken to combating the development of AIDS", says Joakim Esbjrnsson, a virologist at Lund University.

"The unique thing about our study, which has been carried out over 20 years, is that we have been able to follow healthy individuals from when they were infected with HIV-1 only or both HIV-1 and HIV-2 through the entire course of the disease, and to make comparisons of how the infection has developed over time", says Hans Norrgren, doctor in infectious diseases and researcher at Lund University and Skne University Hospital.

An observation that was linked to an early stage of HIV infection was a difference in the genetic diversity of the HIV. It is well-known that different strains of HIV co-exist during the course of the infection and that the genetic difference between them increases the closer to AIDS the infection comes. This genetic difference was lower early on in the disease among people with a dual infection than among t
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Contact: Joakim Esbjornsson
46-703-993-802
Lund University
Source:Eurekalert

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