Pyrazinamidase Activity in Yersinia-enterocolitica and Related Organisms

摘要: Pyrazinamidase activity was tested in 381 Yersinia strains from various ecological and geographical origins belonging to the following species: Y. enterocolitica (five biogroups), intermedia, frederiksenii, kristensenii, aldovae, pseudotuberculosis, pestis. The pyrazinamidase test negative (Pyz-) all bioserogroups of enterocolitica, which is usually harbored virulence plasmid, involved human or animal diseases. pseudotuberculosis pestis were also Pyz-. more ubiquitous without naturally occurring related species Pyz+. allowed separation pathogenic North American isolates other nonpathogenic within biogroup 1. Similarly, environmental biogroups 3A 3B clearly distinguished 3. However, not linked presence plasmid itself should replace pathogenicity tests assess actual an individual strain. This proved be a valuable tool distinguish potential epidemiological surveillance programs.