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Advisor(s)
Abstract(s)
A coexistência entre humanos e animais selvagens pode aumentar o risco de transmissão direta de agentes patogénicos zoonóticos emergentes ou reemergentes para humanos. Este trabalho teve como objetivo avaliar a ocorrência de três importantes agentes patogénicos de origem alimentar em animais selvagens de dois centros de conservação da vida selvagem, em Portugal. Para tal, foram testadas 132 amostras fecais para a presen- ça de Escherichia coli (E. coli produtora de toxina Shiga (STEC) e não pro- dutora de toxina Shiga (não-STEC)), Salmonella spp. e Campylobacter spp.. Foi realizada a caracterização genotípica (pesquisa de genes de vi- rulência, pesquisa de genes de resistência a antimicrobianos (AMR), se- quenciação total do genoma (WGS)) e fenotípica (serotipagem e perfis de AMR) de todos os isolados de interesse.
No geral, 62 amostras testaram positivo para pelo menos uma das espé- cies analisadas: 27,3% para STEC, 11,4% para não-STEC, 3,0% para Sal- monella spp. e 6,8% para Campylobacter spp. Foi detetada resistência a antimicrobianos em quatro isolados de E. coli e no único isolado de Cam- pylobacter coli. A análise de WGS revelou que 57,7% (30/52) das E. coli patogénicas integram agrupamentos genéticos de isolados fortemente relacionados (muitas vezes envolvendo diferentes espécies de animais), indicando a existência de circulação e transmissão de diferentes estirpes patogénicas de E. coli nas áreas estudadas.
Estes resultados apoiam a ideia de que a saúde dos seres humanos, dos animais e dos ecossistemas são interdependentes, reforçando a importân- cia de uma abordagem One Health (Uma Só Saúde) para melhor monitori- zar e controlar as ameaças em saúde pública
Human–wildlife coexistence may increase the potential risk of direct transmission of emergent or re-emergent zoonotic pathogens to humans. Intending to assess the occurrence of three important foodborne pathogens in wild animals of two wildlife conservation centers in Portugal. We investigated 132 fecal samples for the presence of pathogenic E. coli (Shiga toxin-producing E. coli (STEC) and non-STEC), Salmonella spp. and Campylobacter spp.. Genotypic characterization (search for virulence and antimicrobial resistance (AMR) genes, Whole-Genome Sequencing (WGS)), as well as phenotypic characterization (serotyping and AMR profiles) of all isolates of interest were performed. Overall, 62 samples tested positive for at least one of these species: 27.3% for STEC, 11.4% for non-STEC, 3.0% for Salmonella spp. and 6.8% for Campylobacter spp. AMR was detected in four E. coli isolates and in the only Campylobacter coli isolated in this study. WGS analysis revealed that 57.7% (30/52) of pathogenic E. coli integrated genetic clusters of highly closely related isolates (often involving different animal species), supporting the circulation and transmission of different pathogenic E. coli strains in the studied areas. These results support the idea that the health of humans, animals and ecosystems are interconnected, reinforcing the importance of a One Health approach to better monitor and control public health threats.
Human–wildlife coexistence may increase the potential risk of direct transmission of emergent or re-emergent zoonotic pathogens to humans. Intending to assess the occurrence of three important foodborne pathogens in wild animals of two wildlife conservation centers in Portugal. We investigated 132 fecal samples for the presence of pathogenic E. coli (Shiga toxin-producing E. coli (STEC) and non-STEC), Salmonella spp. and Campylobacter spp.. Genotypic characterization (search for virulence and antimicrobial resistance (AMR) genes, Whole-Genome Sequencing (WGS)), as well as phenotypic characterization (serotyping and AMR profiles) of all isolates of interest were performed. Overall, 62 samples tested positive for at least one of these species: 27.3% for STEC, 11.4% for non-STEC, 3.0% for Salmonella spp. and 6.8% for Campylobacter spp. AMR was detected in four E. coli isolates and in the only Campylobacter coli isolated in this study. WGS analysis revealed that 57.7% (30/52) of pathogenic E. coli integrated genetic clusters of highly closely related isolates (often involving different animal species), supporting the circulation and transmission of different pathogenic E. coli strains in the studied areas. These results support the idea that the health of humans, animals and ecosystems are interconnected, reinforcing the importance of a One Health approach to better monitor and control public health threats.
Description
Keywords
Escherichia coli patogénica Salmonella spp Campylobacter spp Vida Selvagem Doenças Zoonóticas Infeções Gastrointestinais
Pedagogical Context
Citation
Boletim Epidemiológico Observações. 2023;12(Supl 15):27-33
Publisher
Instituto Nacional de Saúde Doutor Ricardo Jorge, IP
