Eco- vegetational zones | LGAs | No. of humans examined | No. positive | % positive |
---|---|---|---|---|
Fresh water | Yenagoa | 1980 | 245 | 12.4 |
Sagbama | 575 | 159 | 27.7 | |
Kolokuma | 602 | 409 | 69.9 | |
Brackish water | Ogbia | 967 | 215 | 22.2 |
Southern Ijaw | 600 | 169 | 28.2 | |
Ekeremor | 988 | 177 | 18.5 | |
Mangrove forest | Nembe | 609 | 322 | 52.9 |
Total | 6321 | 1696 | 33.0 |