The influence of landscape structure on the dispersal pattern of yellow fever virus in the state of Sao Paulo

Autor(es)

Wilk-da-Silva, Ramon ; Mederiros-Sousa, Antonio Ralph ; Laporta, Gabriel Zorello ; Mucci, Luis Filipe ; Prist, Paula Ribeiro ; Marrelli, Mauro Toledo

• Tipo de documento: Artigo Científico
• Fonte: Acta Tropica; v. 228, p. 9-pg., 2022-02-01.

Resumo

Man-made changes to the landscape play a crucial role in altering the epidemiologic patterns of infectious diseases, mainly as a result of pathogen spillover. Sylvatic yellow fever is ideally suited to modeling of this phenomenon as the risk of transmission of the disease as well as its circulation and dispersal are associated with forest fragmentation. In this study we investigated the temporal dispersal pattern of yellow fever virus (YFV) by means of confirmed cases of epizootics in non-human primates in municipalities in the state of Sao Paulo where there was no recommendation for vaccination in 2017. We analyzed the resistance to dispersal associated with different classes of land use and the geographic distances between the different locations where epizootics were recorded. The model that best explained the temporal dispersal pattern of YFV in the study area indicated that this was influenced by the geographic distance between collection locations and by the permeability of the forest edges (150 m) at the interface with the following core areas: Water, Agricultural, Non-Forest Formation and Forestry. Water, Agricultural, Urban and Forest core areas and the interfaces between the latter two formed important barriers to circulation of the virus. These findings indicate that fragmentation of vegetation tends to decrease the time taken for pathogens to spread, while conservation of forest areas has the opposite effect. (AU)

• Processo FAPESP: 18/18751-6 - Desenvolvimento de modelos preditivos para a dinâmica de transmissão e dispersão espacial da febre amarela silvestre no Brasil.
• Beneficiário: Antônio Ralph Medeiros de Sousa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/23127-7 - Análise da influência da paisagem sobre a estrutura populacional de mosquitos Haemagogus (Conopostegus) leucocelaenus (Diptera: Culicidae), em áreas com histórico de epizootias de Febre Amarela em primatas não humanos no estado de São Paulo
• Beneficiário: Ramon Wilk da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/25437-6 - Estudo dos potenciais vetores e fatores ecológicos associados à emergência e circulação da febre amarela no Brasil
• Beneficiário: Mauro Toledo Marrelli
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular