Spatial and spatio-temporal analysis of malaria in the state of Acre, western Amazon, Brazil

Geospatial Health
Leonardo Augusto Kohara Melchior, Francisco Chiaravalloti Neto

Abstract

Since 2005, the State of Acre, western Amazon, Brazil, has reported the highest annual parasite incidence (API) of malaria among the Brazilian states. This study examines malaria incidence in Acre using spatial and spatio-temporal analysis based on an ecological time series study analyzing malaria cases and deaths for the time period 1992- 2014 and using secondary data. API indexes were calculated by age, sex, parasite species, ratio of Plasmodium vivax to P. falciparum malaria, malaria mortality rate and case fatality rate. SaTScan was used to detect spatial and spatio-temporal clusters of malaria cases and data were represented in the form of choropleth maps. A high-risk cluster of malaria was detected in Vale do Juruá and three low-risk clusters in Vale do Acre for both parasite species. Those younger than 19 years of age and females showed a high incidence of malaria in Vale do Juruá, but working-age males were the most affected in Vale do Acre. The malaria mortality rate showed a decreasing trend across the state, while the case fatality rate increased only in the micro-region of Rio Branco during the study period. We conclude that malaria is a focal disease in Acre showing different spatial and spatio-temporal patterns of...Continue Reading

Citations

May 6, 2019·JAMA Network Open·Jamille Gregório DombrowskiCláudio Romero Farias Marinho
Mar 1, 2018·Journal of the American Mosquito Control Association·Andreia F BrilhanteTamara N Lima-Camara
Dec 16, 2020·Parasites & Vectors·Elainne Christine de Souza GomesLílian Maria Lapa Montenegro Pimentel
Apr 30, 2021·PLoS Neglected Tropical Diseases·Jamille Gregório DombrowskiClaudio Romero Farias Marinho

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