O que é o urbano na Amazônia contemporânea? Implicações para a vigilância em saúde no bioma

Cardoso, Ana Cláudia Duarte; dal’Asta, Ana Paula; Monteiro, Antonio Miguel Vieira

doi:10.1590/0102-311xpt129723

Cited by 1 publication

(1 citation statement)

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“…Globally, schistosomiasis is considered a rural disease but has been observed close to or in urban areas in Brazil. To measure the impact of urbanization on Biomphalaria occurrence, and because a urban:rural dichotomy does not capture the complexity of urbanization in Brazil 45 , we derived a urban to rural gradient, where 0 indicated that the snail was observed in an urban area and 1 indicated the snail was in a rural area, and continuous values from 0-1 indicate the relative location of the snail along this gradient. We defined urban and rural areas using population density and population size as a proxy.…”

Section: Methodsmentioning

confidence: 99%

Climate and urbanization drive changes in the habitat suitability ofSchistosoma mansonicompetent snails in Brazil

Glidden,

Singleton,

Chamberlin

et al. 2024

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Schistosomiasis is a debilitating neglected tropical disease caused by Schistosoma parasites. In the Americas, Brazil bears the largest burden of this disease with 2 to 6 million people currently infected. Schistosoma flukes are obligate parasites of freshwater Biomphalaria snails, thus controlling snail populations is critical to reducing schistosomiasis transmission risk. As snails are sensitive to a wide range of environmental and climatic drivers, we expect that their distribution has been, and will continue to be, significantly impacted by global environmental change. Here, we leveraged cutting edge machine learning models, remote sensing data, and a 30-year dataset on snail occurrence to map the historical and current habitat suitability of competent Biomphalaria intermediate hosts. We asked (i) What are the key features of the environment that influence the distribution of suitable snail habitat? (ii) How has snail distribution shifted with climate and urbanization throughout the last three decades? Our models show that variability in climate across time, particularly for variables related to precipitation, has likely influenced broad shifts in snail host range, whereas increase in urban areas has influenced fine scale, increases in Biomphalaria habitat suitability. Elucidating change in snail distribution through time - while accounting for non-linearities that are difficult to detect from case studies - can help to inform if and when schistosomiasis control strategies should be adapted.

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Section: Methodsmentioning

confidence: 99%