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In a commercial herd of 1250 wild boars, 56 animals were affected by anorexia, diarrhea, and wasting. Enlargement of mesenteric lymph nodes, thickening of ileal wall, and a white-yellowish ileal content were observed in two of the four animals necropsied. Microscopically, ileal crypts showed epithelial hyperplasia, moderate decrease in goblet cell density, lymphohistiocytic infiltrate in the lamina propria, and moderate depletion with histiocytic infiltrate in Peyer's patches. Curved rod-shaped organisms within the apical cytoplasm of enterocytes were observed in both Warthin-Starry and Lawsonia intracellularis-immunostained sections. PCV2 antigen was observed in ileal Peyer's patches of 3 wild pigs. Trichuris suis nematodes were found in the cecum of the four wild pigs. This report describes clinicopathological findings in cases of enteritis associated with Lawsonia intracellularis and PCV2 infection in a commercial herd of wild boars. Neste trabalho, são relatados os achados clínico-patológicos de casos de enterite associados com infecção por Lawsonia intracellularis e PCV2 em um rebanho comercial com 1250 javalis, sendo que 56 foram afetados por anorexia, diarréia e emagrecimento progressivo. Em dois dos quatro animais necropsiados, foi observado aumento de linfonodos mesentéricos, espessamento da parede do íleo e conteúdo branco-amarelado no íleo. Microscopicamente, as criptas do íleo apresentavam hiperplasia epitelial, decréscimo moderado na densidade de células caliciformes, infiltrado linfo-histiocitário na lâmina própria e depleção moderada das placas de Peyer com infiltrado histiocitário. Bastonetes curvos no ápice citoplasmático dos enterócitos foram observados em preparações coradas com Warthin-Starry e pela imunoistoquímica contra Lawsonia intracellularis. Antígeno de PCV2 foi observado nas placas de Peyer do íleo de três animais e nematódeos Trichuris suis estavam presentes no ceco dos quatro javalis necropsiados

Enteritis associated with Lawsonia intracellularis and porcine circovirus type 2 infection in wild boars in Southern Brazil