[A simplified method of determining the serologic variants of Yersinia enterocolitica]

Identification of the serological variants according to G. Wauters et al. involves examination of one strain in the agglutination test with 32 sera, and to specify a number of serological variants, investigations with monosera are necessary. Six group sera are suggested for the determination of the minimal set of monovalent sera necessary for the identification of the tested strain serological variant. Employment of group sera considerably simplifies the serologic identification of the strains. The selected serum titers help obtain a clear-cut agglutination on the glass within 1 min. A set of 6 group and 31 monoreceptor sera has been prepared. Since serovariants O10 and O34 have been found antigenically identical, serum O34 has not been included in the set. A table for the determination of the serological variant from the results of the agglutination test is offered.