| Mode of transmission | Total (n = 1598*) | |
| Frequency | Percent | |
| No. | (%) | |
| Mosquito bite | 769 | 48.1 |
| Eating dirty food | 167 | 10.5 |
| Drinking dirty water | 144 | 9 |
| Fly | 174 | 10.8 |
| Other | 8 | 0.5 |
| I don’t know | 336 | 21 |