Table 3.
Number of virulence genes detected from rainwater-harvesting tanks.
| Tank Location | Tank ID | Number of E. coli Isolates Tested | EaeA (EPEC/EHEC) | Eagg (EAEC) | ipaH (EIEC) | ST (ETEC) | ibeA (NMEC) | Stx1 (EHEC) | Stx2 (EHEC) | flichH7 (EHEC) |
|---|---|---|---|---|---|---|---|---|---|---|
| Rhodes University | T1 | 11 | 6 (55%) | 0 | 4 (36%) | 0 | 4 (36%) | 0 | 2 (18%) | 4 (36%) |
| Rhodes University | T2 | 11 | 0 | 0 | 0 | 1 (9%) | 1 (9%) | 0 | 0 | 2 (18%) |
| Rhodes University | T3 | 11 | 1 (9%) | 0 | 0 | 0 | 3 (27%) | 0 | 0 | 1 (9%) |
| Rhodes University | T4 | 11 | 2 (18%) | 0 | 1 (9%) | 0 | 4 (36%) | 0 | 0 | 3 (27%) |
| Rhodes University | T5 | 11 | 1 (9%) | 0 | 0 | 0 | 4 (36%) | 0 | 0 | 2 (18%) |
| Rhodes University | T6 | 11 | 1 (9%) | 0 | 2 (18%) | 2 (18%) | 8 (72%) | 0 | 0 | 3 (27%) |
| Kenton-on-sea | T7 | 10 | 2 (20%) | 0 | 0 | 0 | 2 (20%) | 0 | 0 | 2 (20%) |
| Kenton-on-sea | T8 | 10 | 0 | 0 | 4 (40%) | 0 | 2 (20%) | 0 | 1(10%) | 2 (20%) |
| Grahamstown west | T9 | 7 | 1 (14%) | 0 | 0 | 0 | 1 (13%) | 0 | 0 | 0 |
| Grahamstown west | T11 | 7 | 0 | 0 | 0 | 0 | 1 (13%) | 0 | 0 | 0 |
Note: EPEC = Enteropathogenic E. coli, EHEC = Enterohemorrhagic E. coli, EAEC = Enteroaggregative E. coli, EIEC = Enteroinvasive E. coli, NMEC = Neonatal meningitis E. coli.