Using mapping techniques, researchers were able to estimate HIV prevalence at a granular level across Swaziland's regions. This allowed the country to better target its HIV prevention efforts. The analysis used routinely collected data to produce estimates for administrative levels down to 16 square kilometers. This continuous monitoring approach provided valuable information not available from other surveys, which have smaller sample sizes and do not occur regularly. The maps showed HIV prevalence varied significantly across regions, from 12.8-56%, and revealed dense populations of people living with HIV to strategically locate prevention and treatment services.

1. Using Maps for Prevention,
Planning, and Targeting
Experiences from Swaziland
Isabel Brodsky
MEASURE Evaluation
March 2017
Mid-Project Meeting

2. Swaziland has the highest HIV
prevalence in the world (26% of
adults ages 15–49).
Understanding spatial variations in
HIV prevalence at a granular level
allows Swaziland to strategically
target its prevention efforts.
Background

3. Steps to Analysis

4. Value Added of this Approach
Population-based surveys are expensive to
administer.
These surveys do not happen routinely.
Sample sizes do not allow you to estimate at
lower administrative levels.
This methodology produces HIV prevalence estimates
at the lowest level of granularity and allows for
continuous monitoring of the epidemic through the
use of routinely available data.

5. Location of PMTCT and ART Facilities
Hhohho
Lubombo
Shiselweni
South Africa
Mozambique
Manzini
PMTCT
ART/PMTCT

6. % Prevalence
12.8%–23.4%
23.3%–29.2%
29.3%–32.7%
32.8%–56.0%
Estimated HIV Prevalence by Region
Hhohho
Manzini
Lubombo
Shiselweni
South Africa
Mozambique

7. Estimated Density of PLHIV (15-49)
Hhohho
Manzini Lubombo
South Africa
Shiselweni
0–100
101–500
500–1,000
>1,000
PLHIV/16 KM2

9. This presentation was produced with the support of the United
States Agency for International Development (USAID) under the
terms of MEASURE Evaluation cooperative agreement AID-OAA-L-
14-00004. MEASURE Evaluation is implemented by the Carolina
Population Center, University of North Carolina at Chapel Hill in
partnership with ICF International; John Snow, Inc.; Management
Sciences for Health; Palladium; and Tulane University. Views
expressed are not necessarily those of USAID or the United States
government.
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