TABLE 6.
Distribution of the plasmids observed after extraction and migration in a 0.8% agarose gel according to the origins of the STEC isolates
| No. of plasmids | No. (%) of isolates of indicated origina
|
P valueb | |
|---|---|---|---|
| Dairy product or environment | HUS/HC patient | ||
| 0 | 10 (25) | 1 (7) | NS |
| 1 | 19 (48) | 9 (60) | NS |
| 2 | 8 (20) | 2 (13) | NS |
| 3 | 3 (7) | 3 (20) | NS |
a
Forty STEC strains from dairy products or dairy environments and 15 pathogenic STEC strains were analyzed. The numbers in parentheses indicate percentages of isolates positive for the indicated number of plasmids.
b
A P value of <0.05 was considered statistically significant. NS, not significant.