TABLE 2.
Prevalence of adhesin genes in resident and transient intestinal E. coli strains from control and IgA-deficient individualsa
| Gene (virulence factor) | % of strains carrying gene in control individuals
|
P value | % of strains carrying gene in IgA-deficient individuals
|
P value | ||
|---|---|---|---|---|---|---|
| Resident (n = 36) | Transient (n = 18) | Resident (n = 31) | Transient (n = 17) | |||
| fimH (MS adhesin) | 97 | 89 | 0.25 | 90 | 82 | 0.65 |
| papC (P fimbriae) | 33 | 28 | 0.80 | 29 | 6 | 0.07 |
| sfaD or sfaE (S, F1C fimbriae) | 14 | 22 | 0.50 | 26 | 6 | 0.13 |
a
The carriage rate of genes encoding different adhesins was assessed by multiplex PCR in resident and transient E. coli strains obtained from 16 control and 17 IgA-deficient individuals. None of the examined strains carried the Dr hemagglutinin gene draA. Proportions were compared between resident and transient strains using Fisher's exact test.