Visceral leishmaniasis and vulnerability conditions in an endemic urban area of Northeastern Brazil
Visceral leishmaniasis and vulnerability conditions in an endemic urban area of Northeastern Brazil
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DOI：
10.1093/trstmh/try058
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发表时间：
2018-07-01
影响因子：
2.2
通讯作者：
Nery Costa, Carlos Henrique
中科院分区：
文献类型：
--
作者：
de Freitas Rocha, Anarya Teresa;de Espindola, Giovana Mira;Nery Costa, Carlos Henrique
背景：内脏利什曼病（VL）被认为是一种城市流行病，可能与社会人口因素和城市基础设施有关。本研究的目的是分析脆弱性的条件和VL的发病率，并确定疾病的时空模式。方法：收集2007年至2016年报告的VL病例数据。使用由邻域面积归一化的值制作时空分布专题图。对脆弱性的主要指标进行了标准化，以便以后建立社会结构、家庭结构和城市基础设施脆弱性的综合指标，并根据这些指标制定了脆弱性指数。采用二维整体Moran指数验证VL发病率与脆弱性之间存在空间自相关性，采用二维局部Moran指数验证VL发病率与脆弱性之间存在空间聚集性。这种疾病的发病率与生活条件恶化有关。统计学显着集群之间的疾病的发病率和脆弱性指标的社会结构，家庭结构，城市基础设施和综合vulnerability index.Conclusion：解决当地的脆弱性条件是重要的内脏利什曼病的分布，确定最敏感的地区，规划控制策略的理解。
Background: Visceral leishmaniasis (VL) is considered an urban endemic that may be related to sociodemo-graphic factors and urban infrastructure. The objective of this study was to analyze the conditions of vulnerability and the incidence of VL, and to identify the spatiotemporal pattern of the disease.Methods: Data on reported cases of VL were collected from 2007 to 2016. Thematic maps on the spatiotemporal distribution were produced using values normalized by the area of the neighborhoods. The primary indicators of vulnerability were normalized for later construction of the synthetic indicators of vulnerability of social structure, household structure, and urban infrastructure, and from these, a vulnerability index was developed. The bivariate global Moran index was used to verify the existence of spatial autocorrelation between the incidence of VL and the conditions of vulnerability, while the bivariate local Moran index was used to identify the existence of spatial clusters.Results: The 695 cases reported presented a diffuse distribution when the spatial pattern was evaluated. The incidence of the disease was correlated with worsened living conditions. Statistically significant clusters were revealed between the incidence of the disease and the vulnerability indicators of social structure, household structure, urban infrastructure and composite vulnerability index.Conclusion: Addressing the local vulnerability conditions is important to the understanding of the distribution of visceral leishmaniasis, identifying the most susceptible areas, and planning control strategies.