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. 2018 May 14;113(6):e170505.
doi: 10.1590/0074-02760170505.

Effect of vegetation on cutaneous leishmaniasis in Paraná, Brazil

Helen Aline Melo  1 , Diogo Francisco Rossoni  2 , Ueslei Teodoro  1
Affiliations

Effect of vegetation on cutaneous leishmaniasis in Paraná, Brazil

Helen Aline Melo et al. Mem Inst Oswaldo Cruz. .

Abstract

Background: Cutaneous leishmaniasis (CL) is endemic in the state of Paraná, Brazil.

Objective: This study aimed at analysing the influence of the remaining native vegetation on the prevalence of CL in Paraná.

Methods: Global testing was used for spatial autocorrelation along with simultaneous autoregressive model (SAR). The regression was based on the CL coefficient (cases/100,000 inhabitants) as a function of the percentage of natural vegetation cover, altitude, total number of cases, and spatial density (SD) per km2; the location data of the Paraná state municipalities and the detection coefficient (DC) (cases/100,000 inhabitants) of autochthonous cases of CL were obtained from the SINAN in 2012 and 2016. Data on the remaining forests were collected from the Fundação SOS Mata Atlântica and Instituto Nacional de Pesquisas Espaciais.

Findings: The spatial regression of DC revealed statistical significance for SD (Z = 24.1359, p < 0.05, 2012-2013; Z = 24.0817, p < 0.05, 2013-2014; Z = 33.4824, p < 0.05, 2014-2015; and Z = 27.1515, p < 0.05, 2015-2016.

Conclusions: CL cases are reported in areas with native vegetation, such as in riparian forests. However, vegetation is not the only variable that influences the incidence of CL.

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Figures

Fig. 1
Fig. 1. : distribution of cutaneous leishmaniosis cases in terms of detection coefficient (cases per 100,000 inhabitants) in the state of Paraná, Brazil, from 2012 to 2016.
Fig. 2
Fig. 2. : phytogeographical regions and river basins in the state of Paraná, Brazil (Maack 1968).
Fig. 3
Fig. 3. : residual vegetation cover in the state of Paraná from 2012 to 2013 (A) and from 2015 to 2016 (B) (SOSMA 2017).
See this image and copyright information in PMC

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