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Prevalence of virulence-associated genes of Y. enterocolitica and enterotoxin activity in Y. enterocolitica strains of biotype 1A
| Origin (n) | No. of strains positive for:
|
||||||
|---|---|---|---|---|---|---|---|
| pYVa | aila | myfAa | ystAa | ystBa | ystCa | Enterotoxin activityb | |
| Clinicalc (79) | 0 | 4 | 11 | 1 | 69 | 0 | 20 |
| Nonclinical (32) | 0 | 4 | 2 | 0 | 26 | 0 | 13 |
Determined by DNA hybridization.
Measured in suckling mice.
Differences between clinical and nonclinical isolates are not significant (P > 0.05 by Fisher’s exact test).
