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[The epidemiological aspects of a pseudotuberculosis polyclonal infection]
Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
|February 12, 1998
Summary
Outbreaks of Yersinia pseudotuberculosis serovar 1b infection are often caused by multiple bacterial clones, a phenomenon termed polyclonal infection. This polyclonal nature was observed in both outbreak and sporadic cases within heterogeneous Y. pseudotuberculosis populations.
Area of Science:
- Microbiology
- Epidemiology
- Bacterial genetics
Context:
- Investigated plasmid profiles of 489 Yersinia pseudotuberculosis serovar 1b strains.
- Examined isolates from 23 outbreaks and sporadic cases.
- Focused on heterogeneous Y. pseudotuberculosis populations.
Purpose:
- To characterize the clonal diversity of Y. pseudotuberculosis serovar 1b during outbreaks and sporadic infections.
- To determine if outbreaks are caused by single (monoclonal) or multiple (polyclonal) Y. pseudotuberculosis clones.
- To identify patterns in Y. pseudotuberculosis outbreaks based on clonal characteristics.
Summary:
- Yersinia pseudotuberculosis serovar 1b outbreaks and sporadic cases in heterogeneous populations are frequently caused by polyclonal infections.
- Polyclonal infection, defined as infection by multiple Y. pseudotuberculosis clones, was a common finding.
- Three distinct outbreak types were identified, correlating with clonal composition and the presence of a dominant clone.
Impact:
- Provides insights into the complex epidemiology of Yersinia pseudotuberculosis infections.
- Highlights the importance of clonal analysis in understanding disease outbreaks.
- Informs public health strategies for controlling Y. pseudotuberculosis outbreaks.