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AIDS guidelines for children may not improve death rates but may improve treatment access

Date:
November 19, 2013
Source:
Public Library of Science
Summary:
Recent changes to World Health Organization guidelines for starting anti-AIDS drugs (antiretroviral therapy—ART) in young children are unlikely to improve death rates but may increase the numbers of children receiving ART by simplifying access to treatment, according to a new study.

Recent changes to World Health Organization guidelines for starting anti-AIDS drugs (antiretroviral therapy -- ART) in young children are unlikely to improve death rates but may increase the numbers of children receiving ART by simplifying access to treatment, according to a study by international researchers published in this week's PLOS Medicine.

The findings from a study, led by Michael Schomaker from the University of Cape Town in South Africa, suggest that, among southern African children aged 2-5 years at HIV diagnosis, there was no difference in three year death rates between children in whom ART was started immediately and those in whom starting ART was deferred until their CD4 count and percentage (markers of progression of HIV infection) fell below 750 cells/mm3 and 25% respectively.

The authors reached these conclusions by using information from almost 3000 2-5 year old children with HIV who enrolled for ARV treatment in HIV clinics in South Africa, Malawi, and Zimbabwe to develop a model. From this model, the authors found that if all children had started ART immediately after diagnosis irrespective of CD4 value (2013 WHO guidelines) the estimated combined death rate would be 2.1% but if ART was started at a CD4 count below 750 cells/mm3 or a CD4% below 25% (2010 WHO guidelines) the figure was 2.2%, a statistically non-significant difference. However, the authors found higher death rates when ART was started at lower CD4 counts and the study is limited by lack of clinical information on the children and loss of follow up.

The authors conclude: "Our results indicate that in children aged 2-5 y in southern Africa, there is no difference in mortality between starting ART immediately and deferring until CD4% drops below 25% or CD4 count drops below 750 cells/mm3."


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Michael Schomaker, Matthias Egger, James Ndirangu, Sam Phiri, Harry Moultrie, Karl Technau, Vivian Cox, Janet Giddy, Cleophas Chimbetete, Robin Wood, Thomas Gsponer, Carolyn Bolton Moore, Helena Rabie, Brian Eley, Lulu Muhe, Martina Penazzato, Shaffiq Essajee, Olivia Keiser, Mary-Ann Davies. When to Start Antiretroviral Therapy in Children Aged 2–5 Years: A Collaborative Causal Modelling Analysis of Cohort Studies from Southern Africa. PLoS Medicine, 2013; 10 (11): e1001555 DOI: 10.1371/journal.pmed.1001555

Cite This Page:

Public Library of Science. "AIDS guidelines for children may not improve death rates but may improve treatment access." ScienceDaily. ScienceDaily, 19 November 2013. <www.sciencedaily.com/releases/2013/11/131119193618.htm>.
Public Library of Science. (2013, November 19). AIDS guidelines for children may not improve death rates but may improve treatment access. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2013/11/131119193618.htm
Public Library of Science. "AIDS guidelines for children may not improve death rates but may improve treatment access." ScienceDaily. www.sciencedaily.com/releases/2013/11/131119193618.htm (accessed July 24, 2014).

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