is an emerging enteropathogen responsible for pseudomembranous colitis in humans and diarrhoea
in several domestic and wild animal species. Despite its known importance, there are few studies about C. difficile
polymerase chain reaction (PCR) ribotypes in Brazil and the actual knowledge is restricted to studies on human isolates.
The aim of the study was therefore to compare C. difficile
ribotypes isolated from humans and animals in Brazil. Seventysix
strains isolated from humans (n = 25), dogs (n = 23), piglets (n = 12), foals (n = 7), calves (n = 7), one cat,
and one manned wolf were distributed into 24 different PCR ribotypes. Among toxigenic strains, PCR ribotypes 014/020
and 106 were the most common, accounting for 14 (18.4%) and eight (10.5%) samples, respectively. Fourteen different
PCR ribotypes were detected among human isolates, nine of them have also been identified in at least one animal species.
PCR ribotype 027 was not detected, whereas 078 were found only in foals. This data suggests a high diversity of PCR
ribotypes in humans and animals in Brazil and support the discussion of C. difficile
as a zoonotic pathogen.