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J L Massa

Publications and source records attributed to J L Massa.

6 recordsLinked to original sources

[Satellite remote sensing as a tool for the analysis of the occurrence of American cutaneous leishmaniasis in an urban area of southeastern Brazil].

INTRODUCTION: The occurrence of American cutaneous leishmaniasis in the region of the Paraiba valley and the Northern shore of the State of S. Paulo, Brazil, is studied by remote sensing satellite imagery and maps of the region. METHOD: The places where infections might have occurred were plotted on a false color composition made up of Landsat TM-3, 4 and 5 band images, the relevant vegetation (shrubs and trees) has been identified and correlations were sought for those areas seen as areas of risk for the disease and the environmental characteristics and their changes. The maps made it possible to add to the composite image the creeks and the contours of the tops of the large number of hills found in that region. RESULTS: An area is characterized which may prove to be a macro-habitat for vectors, reservoirs and etiological agents. The search for changes in the landscape and the evaluation of meteorological data has not yielded any possible additional risk factor. CONCLUSIONS: There is full correlation among the areas considered to present risk of infection and the presence of creeks and relevant vegetation (shrubs and trees).

Brazil↗

[Occurrence of American cutaneous leishmaniasis by remote sensing satellite imagery in an urban area of Southeastern Brazil].

The areas in which american cutaneous leishmaniasis was reported in 1993 and 1994 for the region around the town of Lagoinha, S. Paulo, Brazil (Lat 23 degrees 05' S; Long 45 degrees 11w) were plotted on a TM-LANDSAT image. The false color composition of bands 3, 4 and 5 made it possible to identify the relevant vegetation (shrubs and trees) within the boundaries of those areas and in their proximity, where they were found at a distance of not more than about 250 meters from the perimeter of each area. The use of means capable of presenting a larger view of a geographical area made the advantages of remote satellite sensing as a tool for the study of this endemic disease clear.

Brazil↗