The slow serum agglutination test was applied to 119 healthy pigs for the determination of the possible presence of anti-Yersinia enterocolitica 0:3 agglutinins. Of the 63.9% reactive animals (<FONT FACE="Symbol">³</FONT>1:20), 8.4% presented positive titers (<FONT FACE="Symbol">³</FONT>1:80), suggesting the presence of this pathogen among swine and consequently an additional public health problem.
Yersinia enterocolitica; agglutinins; swine
