Table 5.
Prevalence and mean intensity of STH and S. haematobium infections by sub-county and village
| Villages | STH infectiona |
S. haematobium (n = 20) |
||
|---|---|---|---|---|
| STH combined (n = 30) |
Hookworms (n = 28) |
T. trichiura (n = 3) |
||
| Prevalence of infection, %(95%CI) | ||||
| Kinango sub-County | 2.8 (0.7–12.2) | 2.5 (0.6–9.9) | 0.7 (0.1–4.9) | 4.3 (2.2–8.3) |
| Dumbule village | 0.7 (0.1–4.9) | 0.7 (9.1–4.9) | 0 | 2.8 (1.1–7.5) |
| Mwachinga village | 4.9 (2.4–10.2) | 4.2 (1.9–9.2) | 1.4 (0.4–5.6) | 5.7 (2.9–11.2) |
| Matuga sub-County | 8.8 (6.3–12.3) | 8.4 (5.4–13.0) | 0.4 (0.1–2.4) | 3.2 (2.7–3.8) |
| Bilashaka village | 10.4 (6.1–17.8) | 10.4 (6.1–17.8) | 0 | 3.5 (1.3–9.2) |
| Mwaluphamba village | 7.4 (4.1–13.4) | 6.7 (3.5–12.5) | 0.7 (0.1–5.2) | 2.9 (1.1–7.7) |
| Overall prevalence | 5.6 (2.8–11.3) | 5.3 (2.5–10.9) | 0.6 (0.2–1.9) | 3.8 (2.6–5.4) |
| Mean intensity of infection, epg (95%CI) | ||||
| Kinango sub-County | – | 496 (95–2587) | 59 (8–419) | 39 (13–118) |
| Dumbule | – | 77 (1–11,467) | 0 | 17 (3–93) |
| Mwachinga | – | 913 (108–7699) | 0 | 61 (16–228) |
| Matuga sub-County | – | 2453 (1114–5403) | 43 (7–262) | 91 (64–129) |
| Bilashaka | 0 | 0 | 108 (12–962) | |
| Mwaluphamba | 1538 (273–8666) | 0 | 76 (9–639) | |
| Overall mean intensity | – | 1414 (547–3654) | 52 (17–162) | 63 (36–112) |
aAscaris lumbricoides was not included in the analysis because no cases were recorded for this particular STH species