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Updated: Jun 12, 2026
The MODS method for diagnosis of tuberculosis and multidrug resistant tuberculosis
Published on: August 11, 2008
An analysis of spatial and socio-economic determinants of tuberculosis in Hermosillo, Mexico, 2000-2006
G Alvarez-Hernández1, F Lara-Valencia, P A Reyes-Castro
1Department of Medicine and Health Sciences, University of Sonora, Hermosillo, Sonora, Mexico. galvarez@guayacan.uson.mx
Setting:
The city of Hermosillo, in Northwest Mexico, has a higher incidence of tuberculosis (TB) than the national average. However, the intra-urban TB distribution, which could limit the effectiveness of preventive strategies and control, is unknown.
Methods:
Using geographic information systems (GIS) and spatial analysis, we characterized the geographical distribution of TB by basic geostatistical area (BGA), and compared it with a social deprivation index. Univariate and bivariate techniques were used to detect risk areas.
Results:
Globally, TB in the city of Hermosillo is not spatially auto-correlated, but local clusters with high incidence and mortality rates were identified in the northwest, central-east and southwest sections of the city. BGAs with high social deprivation had an excess risk of TB.
Discussion:
GIS and spatial analysis are useful tools to detect high TB risk areas in the city of Hermosillo. Such areas may be vulnerable due to low socio-economic status. The study of small geographical areas in urban settings similar to Hermosillo could indicate the best course of action to be taken for TB prevention and control.
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