Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007

American tegumentary leishmaniasis (ATL) is a disease transmitted to humans by the female sandflies of the genus Lutzomyia. Several factors are involved in the disease transmission cycle. In this work only rainfall and deforestation were considered to assess the variability in the incidence of ATL....

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Main Authors: Juan Carlos Rosales, Hyun Mo Yang, Orlando José Avila Blas
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Interdisciplinary Perspectives on Infectious Diseases
Online Access:http://dx.doi.org/10.1155/2014/461013
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author Juan Carlos Rosales
Hyun Mo Yang
Orlando José Avila Blas
author_facet Juan Carlos Rosales
Hyun Mo Yang
Orlando José Avila Blas
author_sort Juan Carlos Rosales
collection DOAJ
description American tegumentary leishmaniasis (ATL) is a disease transmitted to humans by the female sandflies of the genus Lutzomyia. Several factors are involved in the disease transmission cycle. In this work only rainfall and deforestation were considered to assess the variability in the incidence of ATL. In order to reach this goal, monthly recorded data of the incidence of ATL in Orán, Salta, Argentina, were used, in the period 1985–2007. The square root of the relative incidence of ATL and the corresponding variance were formulated as time series, and these data were smoothed by moving averages of 12 and 24 months, respectively. The same procedure was applied to the rainfall data. Typical months, which are April, August, and December, were found and allowed us to describe the dynamical behavior of ATL outbreaks. These results were tested at 95% confidence level. We concluded that the variability of rainfall would not be enough to justify the epidemic outbreaks of ATL in the period 1997–2000, but it consistently explains the situation observed in the years 2002 and 2004. Deforestation activities occurred in this region could explain epidemic peaks observed in both years and also during the entire time of observation except in 2005–2007.
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spelling doaj-art-201e18d6061e40459e92a15d2aa3c6bb2025-08-20T03:54:52ZengWileyInterdisciplinary Perspectives on Infectious Diseases1687-708X1687-70982014-01-01201410.1155/2014/461013461013Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007Juan Carlos Rosales0Hyun Mo Yang1Orlando José Avila Blas2Departamento de Matemática, Facultad de Cs. Exactas, U.N.Sa, Avenue Bolivia 5150, A4408FVY Salta, Salta Province, ArgentinaEPIFISMA, Universidade Estadual de Campinas, CP 6065, 13083-859 Campinas, SP, BrazilDepartamento de Matemática, Facultad de Cs. Exactas, U.N.Sa, Avenue Bolivia 5150, A4408FVY Salta, Salta Province, ArgentinaAmerican tegumentary leishmaniasis (ATL) is a disease transmitted to humans by the female sandflies of the genus Lutzomyia. Several factors are involved in the disease transmission cycle. In this work only rainfall and deforestation were considered to assess the variability in the incidence of ATL. In order to reach this goal, monthly recorded data of the incidence of ATL in Orán, Salta, Argentina, were used, in the period 1985–2007. The square root of the relative incidence of ATL and the corresponding variance were formulated as time series, and these data were smoothed by moving averages of 12 and 24 months, respectively. The same procedure was applied to the rainfall data. Typical months, which are April, August, and December, were found and allowed us to describe the dynamical behavior of ATL outbreaks. These results were tested at 95% confidence level. We concluded that the variability of rainfall would not be enough to justify the epidemic outbreaks of ATL in the period 1997–2000, but it consistently explains the situation observed in the years 2002 and 2004. Deforestation activities occurred in this region could explain epidemic peaks observed in both years and also during the entire time of observation except in 2005–2007.http://dx.doi.org/10.1155/2014/461013
spellingShingle Juan Carlos Rosales
Hyun Mo Yang
Orlando José Avila Blas
Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
Interdisciplinary Perspectives on Infectious Diseases
title Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
title_full Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
title_fullStr Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
title_full_unstemmed Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
title_short Variability Modeling of Rainfall, Deforestation, and Incidence of American Tegumentary Leishmaniasis in Orán, Argentina, 1985–2007
title_sort variability modeling of rainfall deforestation and incidence of american tegumentary leishmaniasis in oran argentina 1985 2007
url http://dx.doi.org/10.1155/2014/461013
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