Department of Genetics and Evolution, Center for Biological and Health Sciences, Federal University of São Carlos, Rodovia Washington Luis km 235, São Carlos 13565-905, SP, Brazil.
EcoHealth Alliance, 520 8th Avenue ste 1200, New York, NY 10018, USA.
Int J Environ Res Public Health. 2024 May 10;21(5):609. doi: 10.3390/ijerph21050609.
In the Americas, wild yellow fever (WYF) is an infectious disease that is highly lethal for some non-human primate species and non-vaccinated people. Specifically, in the Brazilian Atlantic Forest, and mosquitoes act as the major vectors. Despite transmission risk being related to vector densities, little is known about how landscape structure affects vector abundance and movement. To fill these gaps, we used vector abundance data and a model-selection approach to assess how landscape structure affects vector abundance, aiming to identify connecting elements for virus dispersion in the state of São Paulo, Brazil. Our findings show that and abundances, in highly degraded and fragmented landscapes, are mainly affected by increases in forest cover at scales of 2.0 and 2.5 km, respectively. Fragmented landscapes provide ecological corridors for vector dispersion, which, along with high vector abundance, promotes the creation of risk areas for WYF virus spread, especially along the border with Minas Gerais state, the upper edges of the Serra do Mar, in the Serra da Cantareira, and in areas of the metropolitan regions of São Paulo and Campinas.
在美洲，野生黄热病（WYF）是一种传染病，对某些非人类灵长类动物和未接种疫苗的人具有高度致命性。具体来说，在巴西大西洋森林中， 和 蚊子是主要的传播媒介。尽管传播风险与媒介密度有关，但人们对景观结构如何影响媒介丰度和运动知之甚少。为了填补这些空白，我们使用了媒介丰度数据和模型选择方法来评估景观结构如何影响媒介丰度，旨在确定巴西圣保罗州病毒传播的连接要素。我们的研究结果表明，在高度退化和破碎化的景观中， 和 的丰度主要受 2.0 和 2.5 公里尺度上森林覆盖增加的影响。破碎化的景观为媒介传播提供了生态走廊，加上媒介的高丰度，促进了 WYF 病毒传播的风险区域的形成，特别是在与米纳斯吉拉斯州接壤的地区、沿海山脉的上部边缘、坎塔雷拉山脉以及圣保罗和坎皮纳斯大都市区的一些地区。
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