Table 2.
V. cholerae genotypes based on ctxB, rstR, and tcpA genes.
| Countries | ctxB | rstR | tcpA | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
||||||||
| Classical | El Tor | Negative | Classical | El Tor | Both | Negative | Classical | El Tor | Negative | |
|
| ||||||||||
| Bangladesh | 167 | 2 | - | 7 | 162 | - | - | - | 169 | - |
| Nepal | 39 | - | - | - | 39 | - | - | - | 39 | - |
| Thailand | 27 | - | 5 | 9 | 18 | - | 5 | - | 32 | - |
| India | 2 | - | - | - | 2 | - | - | - | 2 | - |
| Pakistan | 3 | - | - | - | 3 | - | - | - | 3 | - |
| Sri Lanka | 1 | - | - | - | 1 | - | - | - | 1 | - |
| Vietnam | 15 | - | - | - | 15 | - | - | - | 15 | - |
| Zambia | 9 | - | - | - | 9 | - | - | - | 9 | - |
| Mozambique | 2 | - | - | 2 | - | - | - | - | 2 | - |
| Zimbabwe | 12 | - | - | - | 12 | - | - | - | 12 | - |
| Mexico | 5 | 16 | 13 | - | 16 | 5 | 13 | 1 | 26 | 3 |
| Brazil | - | 2 | - | - | 2 | - | - | - | 2 | - |
| Peru | - | 3 | - | - | 3 | - | - | - | 3 | - |
| Haiti | 3 | - | - | - | 3 | - | - | - | 3 | - |
*
PCR results for four of the Mexican V. cholerae O1 El Tor strains included in this study were inconsistent, and hence, their tcpA type could not be determined conclusively and not included in this table.