Visceral leishmaniasis (Lutzomyia longipalpis) and Aedes aegypti borne arboviruses (dengue, zika, chikungunya) have potential for epizootic spread from Latin America and the Caribbean and establishment in North America. This project aims to develop and implement a geospatial surveillance and response system data resource for vector-borne diseases in the Americas using NASA satellite and public health surveillance data, geographic information systems, and ecological niche modeling. The objective is to characterize the environmental suitability and potential for spread of selected endemic and epizootic vector-borne diseases in the Americas, with an initial focus on visceral leishmaniasis in Brazil. This project will also offer a geospatial health resource data portal with training courses for researchers interested in mapping and modeling other vector-borne diseases.

Key highlights:

Geographic scope: North and South America (Brazil, Colombia)

Earth observation data: VIIRS/MODIS; Landsat; ASTER; Worldview2,3; GPM; GOES-16; SRTM; SMAP; ECOSTRESS; GEDI

Users: Health agencies in the Americas; Sao Paulo State University (UNESP); Adolfo Lutz Institute; Federal University of Bahia (UFBA); University of Antioquia (UA); Federal University of Uberlandia (UFU); Butantan Institute

SMAP image
Figure 1. Results suggest that direct earth observing satellite measurement of soil moisture by SMAP can be used in lieu of models calculated from classical thermal and precipitation climate station data to assess visceral leishmaniasis disease risk and to guide control program interventions in two municipalities (Bahia, São Paulo) in Brazil.
Aedes-borne arbovirus risk models
Figure 2. Aedes-borne arbovirus risk models in Colombia: Location of Soledad (A), Sincelejo (B), and Neiva (C) in Colombia (left superior panel) and the distribution of temperature data logger inside each municipality highlighted as red circles.