ABSTRACT The epidemiology of salmonellosis in poultry is complex, which makes it difficult to identify the origin and spread of this disease in poultry farms. The aims of this study were to characterize the spatial distribution of Salmonella enterica in epidemiological units in Paraná, Brazil; and to investigate correlations between this microorganism and associated factors. Among the epidemiological units, 78 of 243 (32.10%) were positive. Spatially, the northwestern and western regions had higher concentrations of positive cases than the other regions. In bivariate analyses, the presence of other animal species in the epidemiological unit (prevalence ratio, PR = 0.64; 95% confidence interval, CI = 0.43–0.95; p = 0.022) and proximity to establishments at risk (PR = 0.51; 95% CI = 0.32–0.81; p = 0.001) did not influence positivity, but the average population per poultry shed (between 30,501 and 32,500; PR = 2.57; 95% CI = 1.72–3.83; p = 0.001) was associated with Salmonella positivity. Multiple logistic regression demonstrated that the average population per poultry shed, presence of surrounding risk-posing establishments and presence of surrounding poultry sheds produced a significant multiple model for S. enterica. The results indicated that the presence of S. enterica may be related to higher density broiler in poultry sheds, presence of surrounding poultry sheds, proximity between positive and negative epidemiological units and altitude of the municipality. The information obtained showed that some factors were related to positivity for this microorganism and emphasizes the importance of serotyping to obtain other epidemiological data.

O presente trabalho realizou o mapeamento da susceptibilidade a processos geoambientais na bacia do rio Jacareí, localizada na Serra do Mar Paranaense. A escolha da área justifica-se por essa ter sido fortemente afetada por processos de movimentos de massa ocorridos no dia 11 de março de 2011, que ocasionaram diversos danos e prejuízos à população da região. A cartografia foi realizada por meio da análise digital do relevo, com o emprego dos atributos topográficos que mostraram melhor relação com os processos, sendo eles: hipsometria, declividade, plano de curvatura e índice topográfico de umidade. A legenda do mapa foi organizada em dez classes, contemplando os processos de escorregamentos, corridas de detritos e inundações associadas a corridas de lama, com níveis de susceptibilidade moderada, alta e muito alta.

This paper has been done a susceptibility mapping on geo-environmental processes in Jacareí basin river, localization in Serra do Mar of Paraná. The choice for this region is justified for that it was affected by severe landslides and debris flow occurred on march's 11, 2011, which occasioned several damages and losses to the local community. The mapping was performed by means of digital terrain analysis with the use of topographic attributes that showed better relationship with the processes: elevation, slope, plan curvature and topographic wetness index. The map legend was organized into ten class, considering the landslide, debris flow and floods associated with mud flow, with level moderate, high and very high susceptibility.