184801 Use of GIS mapping for HIV/AIDS surveillance and to inform public health policy in Tshwane, South Africa

Wednesday, October 29, 2008: 11:30 AM

Evasen Naidoo , Compass Project, Foundation for Professional Development, Pretoria, South Africa

The goal of the study was to identify the actual HIV/AIDS service needs and to assess if the current services actually met the community's needs in Tshwane, South Africa. This study exemplified the use of GIS mapping to illustrate the location of services and service delivery gaps.


Estimate the epidemiological burden and risk of HIV/ AIDS.

Identify the current level of services that was available.

Determine the service needs of the HIV/AIDS community.

Compare the spatial distribution of the needs and that of the available services so as to identify the gaps in service provision.

Assess the utilization patterns of the available services


An epidemiological assessment to estimate the burden of HIV/AIDS as well as the number of individuals that require specific services was conducted. Secondly service providers were identified using directories, internet searches, purposive and snowball sampling techniques. Organizational and service data was collected from 227 organizations using a close-ended questionnaire. GPS data on the organizations location was collected to generate GIS maps. Estimates of the service needs were compared to the data collected in order to identify gaps and overlaps in the HIV treatment and service provisions. The GIS map was analyzed to identify the areas that were most affected.


A lack of human resources was identified as a challenge for service delivery. It was calculated that the HIV+ population in Tshwane is 306,929, with 144,257 people in need of ART; 1,707 needing PMTCT, and 52,647 orphans needing care. Most of the services are located in the densely distributed areas.


This project successfully identified HIV/AIDS service needs. The data serves as an important basis from which improved community interventions and strategies can be built that are apt for the specific needs of the area.

Learning Objectives:
How GIS mapping can be used to illustrate the location of services and service delivery gaps. Using epidemiological estimates to calculate population needs About collecting GPS and organizational data in a developing country

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am the Principal Investigator and Research Coordinator
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.