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Enteric disease in pigs is usually of multifactorial etiology, including infectious and non-infectious factors. In many cases of endemic diarrhea in weaner-to-finisher pigs, the combination of 2 or more microorganisms leads to aggravation of intestinal lesions and, consequently, clinical signs. We autopsied a 4-mo-old fattening pig with diarrhea and diagnosed severe fibrinonecrotizing typhlocolitis. Numerous spiral-shaped bacteria and amoeba-like PAS-positive protozoa were observed in the cecal and colonic mucosa and submucosa. Brachyspira hyodysenteriaewas detected by PCR from colonic content. By in situ hybridization, large numbers of Entamoeba poleckiwere found within the lamina propria and submucosa; moderate numbers of Blastocystissp. and scattered trichomonads were present in intestinal content. In addition, Entamoeba polecki, Balantidiumspp., Blastocystissp., and Trichomonassp. were also detected by PCR.

ABSTRACTTransmission of methicillin-resistant Staphylococcus aureus(MRSA) between animals and humans is widely recognized. In this study, we describe the first case of infection of a goat and suspected transmission of MRSA ST398 to a human, which resulted in colonization of animal owners by MRSA sequence type 398.