Predicting the risk of infestation in wild boar on the basis of environmental factors.

is an emerging parasite that poses a potential risk for those consuming game, pork, snails and frogs. One paratenic host of that is known to play an important role in its spread through its feeding habitats is the wild boar. However, no statistical analysis of the influence of aquatic environments and carnivores on the occurrence of in wild boars has yet been performed. The present study combines a small-scale analysis based on hunting districts in the Mazowieckie province with a large-scale analysis based on data for all provinces in Poland. We applied various modeling approaches, including logistic regression and a generalized linear model in order to determine the presence, intensity and prevalence of We used the mesocercariae migration technique (AMT) to estimate the risk of among wild boar in a given hunting district or province. The small-scale analysis found that mesopredators (red fox ()) and racoon dog () were likely to influence infestation of wild boar; however, the effect was weak, probably as a result of the large home range size of these animals. The large-scale analysis found that wetlands influence the prevalence of in wild boar, with the estimated risk increasing in the north of the country; this finding is consistent with other studies. Our findings indicate that the occurrence of in wild boar requires analysis on many levels, and environmental factors play a key role in risk assessment.