HIV heterogeneity and proximity of homestead to roads in rural South Africa: an exploration using a geographical information system.
Trop Med Int Health
; 5(1): 40-6, 2000 Jan.
Article
em En
| MEDLINE
| ID: mdl-10672204
ABSTRACT
objective To describe heterogeneity of HIV prevalence among pregnant women in Hlabisa health district, South Africa and to correlate this with proximity of homestead to roads. methods HIV prevalence measured through anonymous surveillance among pregnant women and stratified by local village clinic. Polygons were created around each clinic, assuming women attend the clinic nearest their home. A geographical information system (GIS) calculated the mean distance from homesteads in each clinic catchment to nearest primary (1 degrees ) and to nearest primary or secondary (2 degrees ) road. results We found marked HIV heterogeneity by clinic catchment (range 19-31% (P < 0.001). A polygon plot demonstrated lower HIV prevalence in catchments remote from 1 degrees roads. Mean distance from homesteads to nearest 1 degrees or 2 degrees road varied by clinic catchment from 1623 to 7569 m. The mean distance from homesteads to a 1 degrees or 2 degrees road for each clinic catchment was strongly correlated with HIV prevalence (r = 0.66; P = 0.002). conclusions The substantial HIV heterogeneity in this district is closely correlated with proximity to a 1 degrees or 2 degrees road. GIS is a powerful tool to demonstrate and to start to analyse this observation. Further research is needed to better understand this relationship both at ecological and individual levels, and to develop interventions to reduce the spread of HIV infection.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Complicações Infecciosas na Gravidez
/
População Rural
/
Infecções por HIV
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Aspecto:
Determinantes_sociais_saude
Limite:
Female
/
Humans
/
Pregnancy
País/Região como assunto:
Africa
Idioma:
En
Revista:
Trop Med Int Health
Assunto da revista:
MEDICINA TROPICAL
/
SAUDE PUBLICA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
África do Sul