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Contamination rate of soil in the various parts of the Ardabil City, Iran with helminths eggs and nematode larvae
| Zone | Number of sites studied | Number of positive samples | Percent |
|---|---|---|---|
| Central | 8 | 2 | 5 |
| North | 8 | 8 | 20 |
| South | 9 | 19 | 47.5 |
| East | 8 | 3 | 7.5 |
| West | 8 | 3 | 7.5 |
| Total | 41 | 35 | 17.5 |
