ELAINE M. S. DORNELES, UFMG; JORDANA A. SANTANA, UFMG; DAYANA RIBEIRO, UFMG; FERNANDA ALVES DORELLA, UFMG; ALESSANDRO DE SA GUIMARAES, CNPGL; MOHAMED S. MOAWAD, Cairo University, Cairo, Egypt; SALAH A. SELIM, Cairo University, Cairo, Egypt; ANA LUIZA M. GARALDI, UNERJ; ANDERSON MIYOSHI, UFMG; MARCIO G. RIBEIRO, UNESP; AURORA M. G. GOUVEIA, UFMG; VASCO AZEVEDO, UFMG; MARCOS B. HEINEMANN, UFMG; ANDREY P. LAGE, UFMG.2026-07-07http://hdl.handle.net/123456789/442526The aim of this study was to evaluate the Enterobacterial Repetitive Intergenic Consensus (ERIC-PCR) as a tool for molecular typing of C. pseudotuberculosis isolates from eight different hosts in twelve countries. Ninety-nine C. pseudotuberculosis field strains, one type strain (ATCC 19410T ) and one vaccine strain (1002) were fingerprinted using the ERIC-1R and ERIC-2 primers, and the ERIC-1R+ERIC-2 primer pair. Twenty-nine different genotypes were generated by ERIC 1-PCR, 28 by ERIC 2-PCR and 35 by ERIC 1+2-PCR. The discriminatory index calculated for ERIC 1, ERIC 2, and ERIC 1+2-PCR was 0.89, 0.86, and 0.92, respectively. Epidemiological concordance was established for all ERIC-PCR assays. ERIC 1+2-PCR was defined as the best method based on suitability of the amplification patterns and discriminatory index. Minimal spanning tree for ERIC 1+2-PCR revealed three major clonal complexes and clustering around nitrate-positive (biovar Equi) and nitrate-negative (biovar Ovis) strains. Therefore, ERIC 1+2-PCR proved to be the best technique evaluated in this study for genotyping C. pseudotuberculosis strains, due to its usefulness for molecular epidemiology investigations.openAccessEnterobacterial Repetitive Intergenic Consensus (ERIC-PCR)Artigo de periódico