Table 2.
Virulence gene profiles of Vibrio cholerae strains harboring the chxA gene
| No. of strainsa | Presence or absenceb |
||||||
|---|---|---|---|---|---|---|---|
| ctx | tcpA | vcsN2-vcsC2-vopF | stn | rtx | zot | hly | |
| 43 | − | − | − | − | + | − | + |
| 4 | − | − | + | − | + | − | + |
| 3 | − | − | + | + | + | − | + |
| 1 | − | − | − | + | + | − | + |
| 1 | + | + | + | − | + | + | + |
| 1 | − | + | − | − | + | − | + |
| 53c | 1 | 2 | 8 | 4 | 53 | 1 | 53 |
a
All strains were of the non-O1/non-O139 serogroup.
b
−, absence of gene(s); +, presence of gene(s). ctx, cholera toxin; tcpA, toxin-coregulated pilus; vcsN2-vcsC2-vopF, type III secretion system; stn, heat-stable enterotoxin; rtx, repeats in toxin; zot, zonula occludens toxin; hly, hemolysin.
c
Totals of columns are in last row.