Table 7. Tonga STH infection species and intensity.
| Ecological zone (n schools) | Infection | n(+)/total | % | 95% CI | Moderate/heavy infection % | Geometric mean eggs per gram (epg)1 |
| Tongatapu (5) | A. lumbricoides | 16/232 | 6.9 | (3.6–10.2) | 0.0 | 184.6 |
| T. trichiura | 18/232 | 7.8 | (4.3–11.2) | 0.0 | 85.5 | |
| Hookworm | 7/232 | 3.0 | (0.8–5.2) | 0.0 | 74.6 | |
| Vava'u/Ha'apai (5) | A. lumbricoides | 70/320 | 21.9 | (17.3–26.4) | 1.42 | 248.1 |
| T. trichiura | 13/320 | 4.1 | (1.9–6.2) | 0.0 | 44.3 | |
| Hookworm | 13/320 | 4.1 | (1.9–6.2) | 0.0 | 137.4 |
1
Mean epg was only calculated for positive cases.
2
One A. lumbricoides infection was moderate intensity with 28,824 epg.