Table 4.
Plasmid composition and prevalence of spvB-virulence plasmids and pSLT traS in S. enterica isolates from domestic animals.
| Salmonella serovarsd | Virulence plasmida (%) | pSLT traSb (%) | Otherc plasmids ≥55 kb (%) |
|---|---|---|---|
| S. Dublin (n = 7) | 100 | 0 | 62 |
| S. Enteritidis (n = 18) | 100 | 100 | 7.7 |
| S. Typhimurium (n =18) | 100 | 100 | 24 |
| S. Kentucky (n =14) | 0 | 0 | 93 |
| Total | 75d | 63d | 39d |
Isolates were screened by PCR and DNA, DNA hybridization for spvCa (virulence plasmid marker) and pSLT traSb.
c
Plasmids were identified as negative for the virulence plasmid marker spvC as determined by gel electrophoresis and Southern analysis.
d
Non-random distribution of spvB-virulence plasmid, pSLT traS or other, large molecular weight plasmids among Salmonella serovars (Chi-Squared Test: p < 0.05).