Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

HIV decline in Zimbabwe linked to behavioural change

03.02.2006


An international research team believes that changes in behaviour among the population have accelerated the recent decline in HIV infection in Eastern Zimbabwe.



Research published today in Science shows how there has been an almost 50 percent decline in HIV prevalence in some groups, which the researchers attribute to people delaying when they first have sex and having fewer casual partners.

They found HIV prevalence fell most steeply at young ages, with a drop in prevalence of 49 percent for women aged between 15 and 24, and a 23 percent drop in men aged 17 to 29.


In 2003 Zimbabwe was estimated to have 1.8 million people infected with HIV/AIDS out of a population of 12 million.

Dr Simon Gregson, from Imperial College London, who led the research, said: “Although we can’t say for certain, fear of HIV and AIDS may have influenced this change in behaviour, with Zimbabwe’s well educated population, good communications, and health service infrastructure, all combining to create this effect.”

The researchers from Imperial College London and the Biomedical Research and Training Institute, Zimbabwe studied 9,454 people recruited from two household censuses, the first conducted between 1998 and 2000, and the second between 2001 and 2003.

They found that overall HIV prevalence declined from 23 percent to 20.5 percent. In men aged 17 to 54 it had declined from 19.5 percent to 18.2 percent, while in women aged 15 to 44, it declined from 25.9 percent to 22.3 percent.

Professor Geoffrey Garnett, from Imperial College London, and one of the researchers, said: “A key reason for this decline appears to be the reduction in the number of casual sexual relationships, although there was also a delay in the onset of sexual activity and increases in condom use prior to the time of the study may also have contributed“.

The study found that among 17 to 19 year old men, only 27 percent had commenced sexual activity in the later census, compared with 45 percent in the earlier one. For women aged 15 to 17, the percentage reporting sexual experience dropped from 21 percent to 9 percent. At the same time, the proportions of men and women reporting a recent casual sexual partner fell by 49 and 22 percent respectively.

The work was funded by the Wellcome Trust and the joint United Nations Programme on HIV/AIDS (UNAIDS).

Tony Stephenson | alfa
Further information:
http://www.imperial.ac.uk

More articles from Health and Medicine:

nachricht Biofilm discovery suggests new way to prevent dangerous infections
23.05.2017 | University of Texas at Austin

nachricht Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>