SciELO - Scientific Electronic Library Online

 
vol.103 número3-4On the development of a new nonhydrostatic atmospheric model in South AfricaStatus of seedling establishment pests of Acacia mearnsii De Wild. (Mimosaceae) in South Africa índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google

Compartir


South African Journal of Science

versión On-line ISSN 1996-7489

Resumen

JOHNSON, Leigh F.; DORRINGTON, Rob E.  y  MATTHEWS, Alan P.. An investigation into the extent of uncertainty surrounding estimates of the impact of HIV/AIDS in South Africa. S. Afr. j. sci. [online]. 2007, vol.103, n.3-4, pp. 135-140. ISSN 1996-7489.

HIV/AIDS statistics have been the source of much controversy in South Africa, but often the extent of uncertainty around these estimates is ignored. There is need for an assessment of the range of uncertainty around often-quoted HIV/AIDS statistics. This analysis determines ranges of uncertainty around the inputs and outputs of the ASSA2002 AIDS and Demographic model of the South African HIV/AIDS epidemic, using a generalized likelihood uncertainty estimation approach. A sample of 500 parameter combinations was drawn by weighting randomly generated parameter combinations by likelihood functions defined on the basis of four South African HIV/AIDS data sets. The estimated number of HIV infections in mid-2005 was 5.1 million (95% prediction interval: 4.2-6.0 million), equivalent to an HIV prevalence rate of 11.1% (9.1-13.1%). Between mid-2004 and mid-2005, the estimated number of new HIV infections was 490 000 (370 000-590 000) and the estimated number of AIDS deaths was 320 000 (270 000-380 000). The posterior mean HIV survival time was estimated to be 11.5 years (95% credibility interval: 10.0-12.9 years), longer than estimated for elsewhere in the developing world. This analysis confirms that South Africa is experiencing a severe HIV/AIDS epidemic, and suggests that HIV/AIDS epidemiology in the country probably differs from that elsewhere in Africa.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License